document_title: History of scientific method

question_text: who was the first to use the scientific method

question_tokens: who was the first to use the scientific method

text: History of scientific method

text: Early methodology[edit]

text: There are few explicit discussions of scientific methodologies in surviving records from early cultures. The most that can be inferred about the approaches to undertaking science in this period stems from descriptions of early investigations into nature, in the surviving records. An Egyptian medical textbook, the Edwin Smith papyrus, (c. 1600 BCE), applies the following components: examination, diagnosis, treatment and prognosis, to the treatment of disease,[2] which display strong parallels to the basic empirical method of science and according to G. E. R. Lloyd[3] played a significant role in the development of this methodology. The Ebers papyrus (c. 1550 BCE) also contains evidence of traditional empiricism.

text: By the middle of the 1st millennium BCE in Mesopotamia, Babylonian astronomy had evolved into the earliest example of a scientific astronomy, as it was "the first and highly successful attempt at giving a refined mathematical description of astronomical phenomena." According to the historian Asger Aaboe, "all subsequent varieties of scientific astronomy, in the Hellenistic world, in India, in Islam, and in the West – if not indeed all subsequent endeavour in the exact sciences – depend upon Babylonian astronomy in decisive and fundamental ways."[4]

text: The early Babylonians and Egyptians developed much technical knowledge, crafts, and mathematics[5] used in practical tasks of divination, as well as a knowledge of medicine,[6] and made lists of various kinds. While the Babylonians in particular had engaged in the earliest forms of an empirical mathematical science, with their early attempts at mathematically describing natural phenomena, they generally lacked underlying rational theories of nature.[4][7][8] It was the ancient Greeks who engaged in the earliest forms of what is today recognized as a rational theoretical science,[7][9] with the move towards a more rational understanding of nature which began at least since the Archaic Period (650 – 480 BCE) with the Presocratic school. Thales was the first to use natural explanations, proclaiming that every event had a natural cause, even though he is known for saying "all things are full of gods" and sacrificed an ox when he discovered his theorem.[10] Leucippus, went on to develop the theory of atomism – the idea that everything is composed entirely of various imperishable, indivisible elements called atoms. This was elaborated in great detail by Democritus.

text: Similar atomist ideas emerged independently among ancient Indian philosophers of the Nyaya, Vaisesika and Buddhist schools.[11] In particular, like the Nyaya, Vaisesika, and Buddhist schools, the Cārvāka epistemology was materialist, and skeptical enough to admit perception as the basis for unconditionally true knowledge, while cautioning that if one could only infer a truth, then one must also harbor a doubt about that truth; an inferred truth could not be unconditional.[12]

text: Towards the middle of the 5th century BCE, some of the components of a scientific tradition were already heavily established, even before Plato, who was an important contributor to this emerging tradition, thanks to the development of deductive reasoning, as propounded by his student, Aristotle. In Protagoras (318d-f), Plato mentioned the teaching of arithmetic, astronomy and geometry in schools. The philosophical ideas of this time were mostly freed from the constraints of everyday phenomena and common sense. This denial of reality as we experience it reached an extreme in Parmenides who argued that the world is one and that change and subdivision do not exist.

text: In the 3rd and 4th centuries BCE, the Greek physicians Herophilos (335–280 BCE) and Erasistratus of Chios employed experiments to further their medical research; Erasistratus at one time repeatedly weighing a caged bird, and noting its weight loss between feeding times.[13]

text: Aristotle[edit]

text: Aristotle's inductive-deductive method used inductions from observations to infer general principles, deductions from those principles to check against further observations, and more cycles of induction and deduction to continue the advance of knowledge.[14]

text: The Organon (Greek: Ὄργανον, meaning "instrument, tool, organ") is the standard collection of Aristotle's six works on logic. The name Organon was given by Aristotle's followers, the Peripatetics. The order of the works is not chronological (the chronology is now difficult to determine) but was deliberately chosen by Theophrastus to constitute a well-structured system.[citation needed] Indeed, parts of them seem to be a scheme of a lecture on logic. The arrangement of the works was made by Andronicus of Rhodes around 40 BCE.[15]

text: The Organon comprises the following six works:

text:
The Categories (Latin: Categoriae) introduces Aristotle's 10-fold classification of that which exists: substance, quantity, quality, relation, place, time, situation, condition, action, and passion.
On Interpretation (Latin:De Interpretatione, Greek Perihermenias) introduces Aristotle's conception of proposition and judgment, and the various relations between affirmative, negative, universal, and particular propositions. Aristotle discusses the square of opposition or square of Apuleius in Chapter 7 and its appendix Chapter 8. Chapter 9 deals with the problem of future contingents.
The Prior Analytics (Latin: Analytica Priora) introduces Aristotle's syllogistic method (see term logic), argues for its correctness, and discusses inductive inference.
The Posterior Analytics (Latin: Analytica Posteriora) deals with demonstration, definition, and scientific knowledge.
The Topics (Latin: Topica) treats of issues in constructing valid arguments, and of inference that is probable, rather than certain. It is in this treatise that Aristotle mentions the predicables, later discussed by Porphyry and by the scholastic logicians.
The Sophistical Refutations (Latin: De Sophisticis Elenchis) gives a treatment of logical fallacies, and provides a key link to Aristotle's work on rhetoric.

tag: ol

text: Aristotle's Metaphysics has some points of overlap with the works making up the Organon but is not traditionally considered part of it; additionally there are works on logic attributed, with varying degrees of plausibility, to Aristotle that were not known to the Peripatetics.

text: Aristotle introduced what may be called a scientific method.[16] His demonstration method is found in Posterior Analytics. He provided another of the ingredients of scientific tradition: empiricism. For Aristotle, universal truths can be known from particular things via induction. To some extent then, Aristotle reconciles abstract thought with observation, although it would be a mistake to imply that Aristotelian science is empirical in form. Indeed, Aristotle did not accept that knowledge acquired by induction could rightly be counted as scientific knowledge. Nevertheless, induction was for him a necessary preliminary to the main business of scientific enquiry, providing the primary premises required for scientific demonstrations.

text: Aristotle largely ignored inductive reasoning in his treatment of scientific enquiry. To make it clear why this is so, consider this statement in the Posterior Analytics:

text: We suppose ourselves to possess unqualified scientific knowledge of a thing, as opposed to knowing it in the accidental way in which the sophist knows, when we think that we know the cause on which the fact depends, as the cause of that fact and of no other, and, further, that the fact could not be other than it is.

text: It was therefore the work of the philosopher to demonstrate universal truths and to discover their causes.[17] While induction was sufficient for discovering universals by generalization, it did not succeed in identifying causes. For this task Aristotle used the tool of deductive reasoning in the form of syllogisms. Using the syllogism, scientists could infer new universal truths from those already established.

text: Aristotle developed a complete normative approach to scientific inquiry involving the syllogism, which he discusses at length in his Posterior Analytics. A difficulty with this scheme lay in showing that derived truths have solid primary premises. Aristotle would not allow that demonstrations could be circular (supporting the conclusion by the premises, and the premises by the conclusion). Nor would he allow an infinite number of middle terms between the primary premises and the conclusion. This leads to the question of how the primary premises are found or developed, and as mentioned above, Aristotle allowed that induction would be required for this task.

text: Towards the end of the Posterior Analytics, Aristotle discusses knowledge imparted by induction.

text: Thus it is clear that we must get to know the primary premises by induction; for the method by which even sense-perception implants the universal is inductive. [...] it follows that there will be no scientific knowledge of the primary premises, and since except intuition nothing can be truer than scientific knowledge, it will be intuition that apprehends the primary premises. [...] If, therefore, it is the only other kind of true thinking except scientific knowing, intuition will be the originative source of scientific knowledge.

text: The account leaves room for doubt regarding the nature and extent of Aristotle's empiricism. In particular, it seems that Aristotle considers sense-perception only as a vehicle for knowledge through intuition. He restricted his investigations in natural history to their natural settings,[18] such as at the Pyrrha lagoon,[19] now called Kalloni, at Lesbos. Aristotle and Theophrastus together formulated the new science of biology,[20] inductively, case by case, for two years before Aristotle was called to tutor Alexander. Aristotle performed no modern-style experiments in the form in which they appear in today's physics and chemistry laboratories.[21] Induction is not afforded the status of scientific reasoning, and so it is left to intuition to provide a solid foundation for Aristotle's science. With that said, Aristotle brings us somewhat closer an empirical science than his predecessors.

text: Epicurus[edit]

text: In his work Kαvώv ('canon', a straight edge or ruler, thus any type of measure or standard, referred to as 'canonic'), Epicurus laid out his first rule for inquiry in physics: 'that the first concepts be seen,[22]:p.20 and that they not require demonstration '.[22]:pp.35–47

text: His second rule for inquiry was that prior to an investigation, we are to have self-evident concepts,[22]:pp.61–80 so that we might infer [έχωμεν οις σημειωσόμεύα] both what is expected [τò ποσμένον], and also what is non-apparent [τò άδηλον].[22]:pp.83–103

text: Epicurus applies his method of inference (the use of observations as signs, Asmis' summary, p. 333: the method of using the phenomena as signs (σημεīα) of what is unobserved)[22]:pp.175–196 immediately to the atomic theory of Democritus. In Aristotle's Prior Analytics, Aristotle himself employs the use of signs.[22]: pp.212–224[23] But Epicurus presented his 'canonic' as rival to Aristotle's logic.[22]:pp.19–34 See: Lucretius (c. 99 BCE – c. 55 BCE) De rerum natura (On the nature of things) a didactic poem explaining Epicurus' philosophy and physics.

text: Emergence of inductive experimental method[edit]

text: During the Middle Ages issues of what is now termed science began to be addressed. There was greater emphasis on combining theory with practice in the Islamic world than there had been in Classical times, and it was common for those studying the sciences to be artisans as well, something that had been "considered an aberration in the ancient world." Islamic experts in the sciences were often expert instrument makers who enhanced their powers of observation and calculation with them.[24] Muslim scientists used experiment and quantification to distinguish between competing scientific theories, set within a generically empirical orientation, as can be seen in the works of Jābir ibn Hayyān (721–815)[25] and Alkindus (801–873)[26] as early examples. Several scientific methods thus emerged from the medieval Muslim world by the early 11th century, all of which emphasized experimentation as well as quantification to varying degrees.

text: Ibn al-Haytham[edit]

text: The Arab physicist Ibn al-Haytham (Alhazen) used experimentation to obtain the results in his Book of Optics (1021). He combined observations, experiments and rational arguments to support his intromission theory of vision, in which rays of light are emitted from objects rather than from the eyes. He used similar arguments to show that the ancient emission theory of vision supported by Ptolemy and Euclid (in which the eyes emit the rays of light used for seeing), and the ancient intromission theory supported by Aristotle (where objects emit physical particles to the eyes), were both wrong.[28]

text: Experimental evidence supported most of the propositions in his Book of Optics and grounded his theories of vision, light and colour, as well as his research in catoptrics and dioptrics. His legacy was elaborated through the 'reforming' of his Optics by Kamal al-Din al-Farisi (d. c. 1320) in the latter's Kitab Tanqih al-Manazir (The Revision of [Ibn al-Haytham's] Optics).[29][30]

text: Alhazen viewed his scientific studies as a search for truth: "Truth is sought for its own sake. And those who are engaged upon the quest for anything for its own sake are not interested in other things. Finding the truth is difficult, and the road to it is rough. ...[31]

text: Alhazen's work included the conjecture that "Light travels through transparent bodies in straight lines only", which he was able to corroborate only after years of effort. He stated, "[This] is clearly observed in the lights which enter into dark rooms through holes. ... the entering light will be clearly observable in the dust which fills the air."[27] He also demonstrated the conjecture by placing a straight stick or a taut thread next to the light beam.[32]

text: Ibn al-Haytham also employed scientific skepticism and emphasized the role of empiricism. He also explained the role of induction in syllogism, and criticized Aristotle for his lack of contribution to the method of induction, which Ibn al-Haytham regarded as superior to syllogism, and he considered induction to be the basic requirement for true scientific research.[33]

text: Something like Occam's razor is also present in the Book of Optics. For example, after demonstrating that light is generated by luminous objects and emitted or reflected into the eyes, he states that therefore "the extramission of [visual] rays is superfluous and useless."[34] He may also have been the first scientist to adopt a form of positivism in his approach. He wrote that "we do not go beyond experience, and we cannot be content to use pure concepts in investigating natural phenomena", and that the understanding of these cannot be acquired without mathematics. After assuming that light is a material substance, he does not further discuss its nature but confines his investigations to the diffusion and propagation of light. The only properties of light he takes into account are those treatable by geometry and verifiable by experiment.[35]

text: Al-Biruni[edit]

text: The Persian scientist Abū Rayhān al-Bīrūnī introduced early scientific methods for several different fields of inquiry during the 1020s and 1030s. For example, in his treatise on mineralogy, Kitab al-Jawahir (Book of Precious Stones), al-Biruni is "the most exact of experimental scientists", while in the introduction to his study of India, he declares that "to execute our project, it has not been possible to follow the geometric method" and thus became one of the pioneers of comparative sociology in insisting on field experience and information.[36] He also developed an early experimental method for mechanics.[37]

text: Al-Biruni's methods resembled the modern scientific method, particularly in his emphasis on repeated experimentation. Biruni was concerned with how to conceptualize and prevent both systematic errors and observational biases, such as "errors caused by the use of small instruments and errors made by human observers." He argued that if instruments produce errors because of their imperfections or idiosyncratic qualities, then multiple observations must be taken, analyzed qualitatively, and on this basis, arrive at a "common-sense single value for the constant sought", whether an arithmetic mean or a "reliable estimate."[38] In his scientific method, "universals came out of practical, experimental work" and "theories are formulated after discoveries", as with inductivism.[36]

text: Ibn Sina (Avicenna)[edit]

text: In the On Demonstration section of The Book of Healing (1027), the Persian philosopher and scientist Avicenna (Ibn Sina) discussed philosophy of science and described an early scientific method of inquiry. He discussed Aristotle's Posterior Analytics and significantly diverged from it on several points. Avicenna discussed the issue of a proper procedure for scientific inquiry and the question of "How does one acquire the first principles of a science?" He asked how a scientist might find "the initial axioms or hypotheses of a deductive science without inferring them from some more basic premises?" He explained that the ideal situation is when one grasps that a "relation holds between the terms, which would allow for absolute, universal certainty." Avicenna added two further methods for finding a first principle: the ancient Aristotelian method of induction (istiqra), and the more recent method of examination and experimentation (tajriba). Avicenna criticized Aristotelian induction, arguing that "it does not lead to the absolute, universal, and certain premises that it purports to provide." In its place, he advocated "a method of experimentation as a means for scientific inquiry."[39]

text: Earlier, in The Canon of Medicine (1025), Avicenna was also the first to describe what is essentially methods of agreement, difference and concomitant variation which are critical to inductive logic and the scientific method.[40][41][42] However, unlike his contemporary al-Biruni's scientific method, in which "universals came out of practical, experimental work" and "theories are formulated after discoveries", Avicenna developed a scientific procedure in which "general and universal questions came first and led to experimental work."[36] Due to the differences between their methods, al-Biruni referred to himself as a mathematical scientist and to Avicenna as a philosopher, during a debate between the two scholars.[43]

text: Robert Grosseteste[edit]

text: During the European Renaissance of the 12th century, ideas on scientific methodology, including Aristotle's empiricism and the experimental approaches of Alhazen and Avicenna, were introduced to medieval Europe via Latin translations of Arabic and Greek texts and commentaries. Robert Grosseteste's commentary on the Posterior Analytics places Grosseteste among the first scholastic thinkers in Europe to understand Aristotle's vision of the dual nature of scientific reasoning. Concluding from particular observations into a universal law, and then back again, from universal laws to prediction of particulars. Grosseteste called this "resolution and composition". Further, Grosseteste said that both paths should be verified through experimentation to verify the principles.[44]

text: Roger Bacon[edit]

text: Roger Bacon was inspired by the writings of Grosseteste. In his account of a method, Bacon described a repeating cycle of observation, hypothesis, experimentation, and the need for independent verification. He recorded the way he had conducted his experiments in precise detail, perhaps with the idea that others could reproduce and independently test his results.

text: About 1256 he joined the Franciscan Order and became subject to the Franciscan statute forbidding Friars from publishing books or pamphlets without specific approval. After the accession of Pope Clement IV in 1265, the Pope granted Bacon a special commission to write to him on scientific matters. In eighteen months he completed three large treatises, the Opus Majus, Opus Minus, and Opus Tertium which he sent to the Pope.[45] William Whewell has called Opus Majus at once the Encyclopaedia and Organon of the 13th century.[46]

text:
Part I (pp. 1–22) treats of the four causes of error: authority, custom, the opinion of the unskilled many, and the concealment of real ignorance by a pretense of knowledge.
Part VI (pp. 445–477) treats of experimental science, domina omnium scientiarum. There are two methods of knowledge: the one by argument, the other by experience. Mere argument is never sufficient; it may decide a question, but gives no satisfaction or certainty to the mind, which can only be convinced by immediate inspection or intuition, which is what experience gives.
Experimental science, which in the Opus Tertium (p. 46) is distinguished from the speculative sciences and the operative arts, is said to have three great prerogatives over all sciences:

It verifies their conclusions by direct experiment;
It discovers truths which they could never reach;
It investigates the secrets of nature, and opens to us a knowledge of past and future.

Roger Bacon illustrated his method by an investigation into the nature and cause of the rainbow, as a specimen of inductive research.[47]

text: Renaissance humanism and medicine[edit]

text: Aristotle’s ideas became a framework for critical debate beginning with absorption of the Aristotelian texts into the university curriculum in the first half of the 13th century.[48] Contributing to this was the success of medieval theologians in reconciling Aristotelian philosophy with Christian theology. Within the sciences, medieval philosophers were not afraid of disagreeing with Aristotle on many specific issues, although their disagreements were stated within the language of Aristotelian philosophy. All medieval natural philosophers were Aristotelians, but "Aristotelianism" had become a somewhat broad and flexible concept. With the end of Middle Ages, the Renaissance rejection of medieval traditions coupled with an extreme reverence for classical sources led to a recovery of other ancient philosophical traditions, especially the teachings of Plato.[49] By the 17th century, those who clung dogmatically to Aristotle's teachings were faced with several competing approaches to nature.[50]

text: The discovery of the Americas at the close of the 15th century showed the scholars of Europe that new discoveries could be found outside of the authoritative works of Aristotle, Pliny, Galen, and other ancient writers.

text: Galen of Pergamon (129 – c. 200 AD) had studied with four schools in antiquity — Platonists, Aristotelians, Stoics, and Epicureans, and at Alexandria, the center of medicine at the time. In his Methodus Medendi, Galen had synthesized the empirical and dogmatic schools of medicine into his own method, which was preserved by Arab scholars. After the translations from Arabic were critically scrutinized, a backlash occurred and demand arose in Europe for translations of Galen's medical text from the original Greek. Galen's method became very popular in Europe. Thomas Linacre, the teacher of Erasmus, thereupon translated Methodus Medendi from Greek into Latin for a larger audience in 1519.[51] Limbrick 1988 notes that 630 editions, translations, and commentaries on Galen were produced in Europe in the 16th century, eventually eclipsing Arabic medicine there, and peaking in 1560, at the time of the scientific revolution.[52]

text: By the late 15th century, the physician-scholar Niccolò Leoniceno was finding errors in Pliny's Natural History. As a physician, Leoniceno was concerned about these botanical errors propagating to the materia medica on which medicines were based.[53] To counter this, a botanical garden was established at Orto botanico di Padova, University of Padua (in use for teaching by 1546), in order that medical students might have empirical access to the plants of a pharmacopia. Other Renaissance teaching gardens were established, notably by the physician Leonhart Fuchs, one of the founders of botany.[54]

text: The first published work devoted to the concept of method is Jodocus Willichius, De methodo omnium artium et disciplinarum informanda opusculum (1550).[citation needed]

text: Skepticism as a basis for understanding[edit]

text: In 1562 "Outlines of Pyrrhonism" by Sextus Empiricus (c. 160-210 AD) appeared in print and in Latin, quickly placing the arguments of classical skepticism in the European mainstream. Skepticism either denies or strongly doubts (depending on the school) the possibility of certain knowledge. Descartes' famous "Cogito" argument is an attempt to overcome skepticism and reestablish a foundation for certainty but other thinkers responded by revising what the search for knowledge, particularly physical knowledge, might be.

text: The first of these, philosopher and physician Francisco Sanches, was led by his medical training at Rome, 1571–73, to search for a true method of knowing (modus sciendi), as nothing clear can be known by the methods of Aristotle and his followers[55] — for example, 1) syllogism fails upon circular reasoning; 2) Aristotle's modal logic was not stated clearly enough for use in medieval times, and remains a research problem to this day.[56] Following the physician Galen's method of medicine, Sanches lists the methods of judgement and experience, which are faulty in the wrong hands,[57] and we are left with the bleak statement That Nothing is Known (1581, in Latin Quod Nihil Scitur). This challenge was taken up by René Descartes in the next generation (1637), but at the least, Sanches warns us that we ought to refrain from the methods, summaries, and commentaries on Aristotle, if we seek scientific knowledge. In this, he is echoed by Francis Bacon who was influenced by another prominent exponent of skepticism, Montaigne; Sanches cites the humanist Juan Luis Vives who sought a better educational system, as well as a statement of human rights as a pathway for improvement of the lot of the poor.

text: "Sanches develops his scepticism by means of an intellectual critique of Aristotelianism, rather than by an appeal to the history of human stupidity and the variety and contrariety of previous theories." —Popkin 1979, p. 37, as cited by Sanches, Limbrick & Thomson 1988, pp. 24–5

text: "To work, then; and if you know something, then teach me; I shall be extremely grateful to you. In the meantime, as I prepare to examine Things, I shall raise the question anything is known, and if so, how, in the introductory passages of another book,[58] a book in which I will expound, as far as human frailty allows,[59] the method of knowing. Farewell.

text: WHAT IS TAUGHT HAS NO MORE STRENGTH THAN IT DERIVES FROM HIM WHO IS TAUGHT.

text: WHAT?" —Francisco Sanches (1581) Quod Nihil Scitur p. 100[60]

text: Francis Bacon's eliminative induction[edit]

text: "If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties." —Francis Bacon (1605) The Advancement of Learning, Book 1, v, 8

text: Francis Bacon (1561–1626) entered Trinity College, Cambridge in April 1573, where he applied himself diligently to the several sciences as then taught, and came to the conclusion that the methods employed and the results attained were alike erroneous; he learned to despise the current Aristotelian philosophy. He believed philosophy must be taught its true purpose, and for this purpose a new method must be devised. With this conception in his mind, Bacon left the university.[61]

text: Bacon attempted to describe a rational procedure for establishing causation between phenomena based on induction. Bacon's induction was, however, radically different than that employed by the Aristotelians. As Bacon put it,

text: [A]nother form of induction must be devised than has hitherto been employed, and it must be used for proving and discovering not first principles (as they are called) only, but also the lesser axioms, and the middle, and indeed all. For the induction which proceeds by simple enumeration is childish. —Novum Organum section CV

text: Bacon's method relied on experimental histories to eliminate alternative theories.[62] Bacon explains how his method is applied in his Novum Organum (published 1620). In an example he gives on the examination of the nature of heat, Bacon creates two tables, the first of which he names "Table of Essence and Presence", enumerating the many various circumstances under which we find heat. In the other table, labelled "Table of Deviation, or of Absence in Proximity", he lists circumstances which bear resemblance to those of the first table except for the absence of heat. From an analysis of what he calls the natures (light emitting, heavy, colored, etc.) of the items in these lists we are brought to conclusions about the form nature, or cause, of heat. Those natures which are always present in the first table, but never in the second are deemed to be the cause of heat.

text: The role experimentation played in this process was twofold. The most laborious job of the scientist would be to gather the facts, or 'histories', required to create the tables of presence and absence. Such histories would document a mixture of common knowledge and experimental results. Secondly, experiments of light, or, as we might say, crucial experiments would be needed to resolve any remaining ambiguities over causes.

text: Bacon showed an uncompromising commitment to experimentation. Despite this, he did not make any great scientific discoveries during his lifetime. This may be because he was not the most able experimenter.[63] It may also be because hypothesising plays only a small role in Bacon's method compared to modern science.[64] Hypotheses, in Bacon's method, are supposed to emerge during the process of investigation, with the help of mathematics and logic. Bacon gave a substantial but secondary role to mathematics "which ought only to give definiteness to natural philosophy, not to generate or give it birth" (Novum Organum XCVI). An over-emphasis on axiomatic reasoning had rendered previous non-empirical philosophy impotent, in Bacon's view, which was expressed in his Novum Organum:

text: XIX. There are and can be only two ways of searching into and discovering truth. The one flies from the senses and particulars to the most general axioms, and from these principles, the truth of which it takes for settled and immoveable, proceeds to judgment and to the discovery of middle axioms. And this way is now in fashion. The other derives axioms from the senses and particulars, rising by a gradual and unbroken ascent, so that it arrives at the most general axioms last of all. This is the true way, but as yet untried.

text: In Bacon's utopian novel, The New Atlantis, the ultimate role is given for inductive reasoning:

text: Lastly, we have three that raise the former discoveries by experiments into greater observations, axioms, and aphorisms. These we call interpreters of nature.

text: Descartes[edit]

text: In 1619, René Descartes began writing his first major treatise on proper scientific and philosophical thinking, the unfinished Rules for the Direction of the Mind. His aim was to create a complete science that he hoped would overthrow the Aristotelian system and establish himself as the sole architect[65] of a new system of guiding principles for scientific research.

text: This work was continued and clarified in his 1637 treatise, Discourse on Method, and in his 1641 Meditations. Descartes describes the intriguing and disciplined thought experiments he used to arrive at the idea we instantly associate with him: I think therefore I am.

text: From this foundational thought, Descartes finds proof of the existence of a God who, possessing all possible perfections, will not deceive him provided he resolves "[...] never to accept anything for true which I did not clearly know to be such; that is to say, carefully to avoid precipitancy and prejudice, and to comprise nothing more in my judgment than what was presented to my mind so clearly and distinctly as to exclude all ground of methodic doubt."[66]

text: This rule allowed Descartes to progress beyond his own thoughts and judge that there exist extended bodies outside of his own thoughts. Descartes published seven sets of objections to the Meditations from various sources[67] along with his replies to them. Despite his apparent departure from the Aristotelian system, a number of his critics felt that Descartes had done little more than replace the primary premises of Aristotle with those of his own. Descartes says as much himself in a letter written in 1647 to the translator of Principles of Philosophy,

text: a perfect knowledge [...] must necessarily be deduced from first causes [...] we must try to deduce from these principles knowledge of the things which depend on them, that there be nothing in the whole chain of deductions deriving from them that is not perfectly manifest.[68]

text: And again, some years earlier, speaking of Galileo's physics in a letter to his friend and critic Mersenne from 1638,

text: without having considered the first causes of nature, [Galileo] has merely looked for the explanations of a few particular effects, and he has thereby built without foundations.[69]

text: Whereas Aristotle purported to arrive at his first principles by induction, Descartes believed he could obtain them using reason only. In this sense, he was a Platonist, as he believed in the innate ideas, as opposed to Aristotle's blank slate (tabula rasa), and stated that the seeds of science are inside us.[70]

text: Unlike Bacon, Descartes successfully applied his own ideas in practice. He made significant contributions to science, in particular in aberration-corrected optics. His work in analytic geometry was a necessary precedent to differential calculus and instrumental in bringing mathematical analysis to bear on scientific matters.

text: Galileo Galilei[edit]

text: During the period of religious conservatism brought about by the Reformation and Counter-Reformation, Galileo Galilei unveiled his new science of motion. Neither the contents of Galileo’s science, nor the methods of study he selected were in keeping with Aristotelian teachings. Whereas Aristotle thought that a science should be demonstrated from first principles, Galileo had used experiments as a research tool. Galileo nevertheless presented his treatise in the form of mathematical demonstrations without reference to experimental results. It is important to understand that this in itself was a bold and innovative step in terms of scientific method. The usefulness of mathematics in obtaining scientific results was far from obvious.[71] This is because mathematics did not lend itself to the primary pursuit of Aristotelian science: the discovery of causes.

text: Whether it is because Galileo was realistic about the acceptability of presenting experimental results as evidence or because he himself had doubts about the epistemological status of experimental findings is not known. Nevertheless, it is not in his Latin treatise on motion that we find reference to experiments, but in his supplementary dialogues written in the Italian vernacular. In these dialogues experimental results are given, although Galileo may have found them inadequate for persuading his audience. Thought experiments showing logical contradictions in Aristotelian thinking, presented in the skilled rhetoric of Galileo's dialogue were further enticements for the reader.

text: As an example, in the dramatic dialogue titled Third Day from his Two New Sciences, Galileo has the characters of the dialogue discuss an experiment involving two free falling objects of differing weight. An outline of the Aristotelian view is offered by the character Simplicio. For this experiment he expects that "a body which is ten times as heavy as another will move ten times as rapidly as the other". The character Salviati, representing Galileo's persona in the dialogue, replies by voicing his doubt that Aristotle ever attempted the experiment. Salviati then asks the two other characters of the dialogue to consider a thought experiment whereby two stones of differing weights are tied together before being released. Following Aristotle, Salviati reasons that "the more rapid one will be partly retarded by the slower, and the slower will be somewhat hastened by the swifter". But this leads to a contradiction, since the two stones together make a heavier object than either stone apart, the heavier object should in fact fall with a speed greater than that of either stone. From this contradiction, Salviati concludes that Aristotle must, in fact, be wrong and the objects will fall at the same speed regardless of their weight, a conclusion that is borne out by experiment.

text: In his 1991 survey of developments in the modern accumulation of knowledge such as this Charles Van Doren[72] considers that the Copernican Revolution really is the Galilean Cartesian (René Descartes) or simply the Galilean revolution on account of the courage and depth of change brought about by the work of Galileo.

text: Isaac Newton[edit]

text: Both Bacon and Descartes wanted to provide a firm foundation for scientific thought that avoided the deceptions of the mind and senses. Bacon envisaged that foundation as essentially empirical, whereas Descartes provides a metaphysical foundation for knowledge. If there were any doubts about the direction in which scientific method would develop, they were set to rest by the success of Isaac Newton. Implicitly rejecting Descartes' emphasis on rationalism in favor of Bacon's empirical approach, he outlines his four "rules of reasoning" in the Principia,

text:
We are to admit no more causes of natural things than such as are both true and sufficient to explain their appearances.
Therefore to the same natural effects we must, as far as possible, assign the same causes.
The qualities of bodies, which admit neither intension nor remission of degrees, and which are found to belong to all bodies within the reach of our experiments, are to be esteemed the universal qualities of all bodies whatsoever.
In experimental philosophy we are to look upon propositions collected by general induction from phænomena as accurately or very nearly true, notwithstanding any contrary hypotheses that may be imagined, until such time as other phænomena occur, by which they may either be made more accurate, or liable to exceptions.[73]

text: But Newton also left an admonition about a theory of everything:

text: To explain all nature is too difficult a task for any one man or even for any one age. 'Tis much better to do a little with certainty, and leave the rest for others that come after you, than to explain all things.[74]

text: Newton's work became a model that other sciences sought to emulate, and his inductive approach formed the basis for much of natural philosophy through the 18th and early 19th centuries. Some methods of reasoning were later systematized by Mill's Methods (or Mill's canon), which are five explicit statements of what can be discarded and what can be kept while building a hypothesis. George Boole and William Stanley Jevons also wrote on the principles of reasoning.

text: Integrating deductive and inductive method[edit]

text: Attempts to systematize a scientific method were confronted in the mid-18th century by the problem of induction, a positivist logic formulation which, in short, asserts that nothing can be known with certainty except what is actually observed. David Hume took empiricism to the skeptical extreme; among his positions was that there is no logical necessity that the future should resemble the past, thus we are unable to justify inductive reasoning itself by appealing to its past success. Hume's arguments, of course, came on the heels of many, many centuries of excessive speculation upon excessive speculation not grounded in empirical observation and testing. Many of Hume's radically skeptical arguments were argued against, but not resolutely refuted, by Immanuel Kant's Critique of Pure Reason in the late 18th century.[75] Hume's arguments continue to hold a strong lingering influence and certainly on the consciousness of the educated classes for the better part of the 19th century when the argument at the time became the focus on whether or not the inductive method was valid.

text: Hans Christian Ørsted, (Ørsted is the Danish spelling; Oersted in other languages) (1777–1851) was heavily influenced by Kant, in particular, Kant's Metaphysische Anfangsgründe der Naturwissenschaft (Metaphysical Foundations of Natural Science).[76] The following sections on Ørsted encapsulate our current, common view of scientific method. His work appeared in Danish, most accessibly in public lectures, which he translated into German, French, English, and occasionally Latin. But some of his views go beyond Kant:

text: Ørsted's "First Introduction to General Physics" (1811) exemplified the steps of observation,[78] hypothesis,[79] deduction[80] and experiment. In 1805, based on his researches on electromagnetism Ørsted came to believe that electricity is propagated by undulatory action (i.e., fluctuation). By 1820, he felt confident enough in his beliefs that he resolved to demonstrate them in a public lecture, and in fact observed a small magnetic effect from a galvanic circuit (i.e., voltaic circuit), without rehearsal;[81][82]

text: In 1831 John Herschel (1792–1871) published A Preliminary Discourse on the study of Natural Philosophy, setting out the principles of science. Measuring and comparing observations was to be used to find generalisations in "empirical laws", which described regularities in phenomena, then natural philosophers were to work towards the higher aim of finding a universal "law of nature" which explained the causes and effects producing such regularities. An explanatory hypothesis was to be found by evaluating true causes (Newton's "vera causae") derived from experience, for example evidence of past climate change could be due to changes in the shape of continents, or to changes in Earth's orbit. Possible causes could be inferred by analogy to known causes of similar phenomena.[83][84] It was essential to evaluate the importance of a hypothesis; "our next step in the verification of an induction must, therefore, consist in extending its application to cases not originally contemplated; in studiously varying the circumstances under which our causes act, with a view to ascertain whether their effect is general; and in pushing the application of our laws to extreme cases."[85]

text: William Whewell (1794–1866) regarded his History of the Inductive Sciences, from the Earliest to the Present Time (1837) to be an introduction to the Philosophy of the Inductive Sciences (1840) which analyzes the method exemplified in the formation of ideas. Whewell attempts to follow Bacon's plan for discovery of an effectual art of discovery. He named the hypothetico-deductive method (which Encyclopædia Britannica credits to Newton[86]); Whewell also coined the term scientist. Whewell examines ideas and attempts to construct science by uniting ideas to facts. He analyses induction into three steps:

text:
the selection of the fundamental idea, such as space, number, cause, or likeness
a more special modification of those ideas, such as a circle, a uniform force, etc.
the determination of magnitudes

text: Upon these follow special techniques applicable for quantity, such as the method of least squares, curves, means, and special methods depending on resemblance (such as pattern matching, the method of gradation, and the method of natural classification (such as cladistics). But no art of discovery, such as Bacon anticipated, follows, for "invention, sagacity, genius" are needed at every step.[87] Whewell's sophisticated concept of science had similarities to that shown by Herschel, and he considered that a good hypothesis should connect fields that had previously been thought unrelated, a process he called consilience. However, where Herschel held that the origin of new biological species would be found in a natural rather than a miraculous process, Whewell opposed this and considered that no natural cause had been shown for adaptation so an unknown divine cause was appropriate.[83]

text: John Stuart Mill (1806–1873) was stimulated to publish A System of Logic (1843) upon reading Whewell's History of the Inductive Sciences. Mill may be regarded as the final exponent of the empirical school of philosophy begun by John Locke, whose fundamental characteristic is the duty incumbent upon all thinkers to investigate for themselves rather than to accept the authority of others. Knowledge must be based on experience.[88]

text: In the mid-19th century Claude Bernard was also influential, especially in bringing the scientific method to medicine. In his discourse on scientific method, An Introduction to the Study of Experimental Medicine (1865), he described what makes a scientific theory good and what makes a scientist a true discoverer. Unlike many scientific writers of his time, Bernard wrote about his own experiments and thoughts, and used the first person.[89]

text: William Stanley Jevons' The Principles of Science: a treatise on logic and scientific method (1873, 1877) Chapter XII "The Inductive or Inverse Method", Summary of the Theory of Inductive Inference, states "Thus there are but three steps in the process of induction :-

text:
Framing some hypothesis as to the character of the general law.
Deducing some consequences of that law.
Observing whether the consequences agree with the particular tasks under consideration."

text: Jevons then frames those steps in terms of probability, which he then applied to economic laws. Ernest Nagel notes that Jevons and Whewell were not the first writers to argue for the centrality of the hypothetico-deductive method in the logic of science.[90]

text: Charles Sanders Peirce[edit]

text: This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (January 2017) (Learn how and when to remove this template message)

text: In the late 19th century, Charles Sanders Peirce proposed a schema that would turn out to have considerable influence in the further development of scientific method generally. Peirce's work quickly accelerated the progress on several fronts. Firstly, speaking in broader context in "How to Make Our Ideas Clear" (1878),[91] Peirce outlined an objectively verifiable method to test the truth of putative knowledge on a way that goes beyond mere foundational alternatives, focusing upon both Deduction and Induction. He thus placed induction and deduction in a complementary rather than competitive context (the latter of which had been the primary trend at least since David Hume a century before). Secondly, and of more direct importance to scientific method, Peirce put forth the basic schema for hypothesis-testing that continues to prevail today. Extracting the theory of inquiry from its raw materials in classical logic, he refined it in parallel with the early development of symbolic logic to address the then-current problems in scientific reasoning. Peirce examined and articulated the three fundamental modes of reasoning that play a role in scientific inquiry today, the processes that are currently known as abductive, deductive, and inductive inference. Thirdly, he played a major role in the progress of symbolic logic itself – indeed this was his primary specialty.

text: Charles S. Peirce was also a pioneer in statistics. Peirce held that science achieves statistical probabilities, not certainties, and that chance, a veering from law, is very real. He assigned probability to an argument’s conclusion rather than to a proposition, event, etc., as such. Most of his statistical writings promote the frequency interpretation of probability (objective ratios of cases), and many of his writings express skepticism about (and criticize the use of) probability when such models are not based on objective randomization.[92] Though Peirce was largely a frequentist, his possible world semantics introduced the "propensity" theory of probability. Peirce (sometimes with Jastrow) investigated the probability judgments of experimental subjects, pioneering decision analysis.

text: Peirce was one of the founders of statistics. He formulated modern statistics in "Illustrations of the Logic of Science" (1877–1878) and "A Theory of Probable Inference" (1883). With a repeated measures design, he introduced blinded, controlled randomized experiments (before Fisher). He invented an optimal design for experiments on gravity, in which he "corrected the means". He used logistic regression, correlation, and smoothing, and improved the treatment of outliers. He introduced terms "confidence" and "likelihood" (before Neyman and Fisher). (See the historical books of Stephen Stigler.) Many of Peirce's ideas were later popularized and developed by Ronald A. Fisher, Jerzy Neyman, Frank P. Ramsey, Bruno de Finetti, and Karl Popper.

text: Popper and Kuhn[edit]

text: Karl Popper (1902–1994) is generally credited with providing major improvements in the understanding of the scientific method in the mid-to-late 20th century. In 1934 Popper published The Logic of Scientific Discovery, which repudiated the by then traditional observationalist-inductivist account of the scientific method. He advocated empirical falsifiability as the criterion for distinguishing scientific work from non-science. According to Popper, scientific theory should make predictions (preferably predictions not made by a competing theory) which can be tested and the theory rejected if these predictions are shown not to be correct. Following Peirce and others, he argued that science would best progress using deductive reasoning as its primary emphasis, known as critical rationalism. His astute formulations of logical procedure helped to rein in the excessive use of inductive speculation upon inductive speculation, and also helped to strengthen the conceptual foundations for today's peer review procedures.[citation needed]

text: Critics of Popper, chiefly Thomas Kuhn, Paul Feyerabend and Imre Lakatos, rejected the idea that there exists a single method that applies to all science and could account for its progress. In 1962 Kuhn published the influential book The Structure of Scientific Revolutions which suggested that scientists worked within a series of paradigms, and argued there was little evidence of scientists actually following a falsificationist methodology. Kuhn quoted Max Planck who had said in his autobiography, "a new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it."[93]

text: These debates clearly show that there is no universal agreement as to what constitutes the "scientific method".[94] There remain, nonetheless, certain core principles that are the foundation of scientific inquiry today.[95]

text: Mention of the topic[edit]

text: In Quod Nihil Scitur (1581), Francisco Sanches refers to another book title, De modo sciendi (on the method of knowing). This work appeared in Spanish as Método universal de las ciencias.[59]

text: In 1833 Robert and William Chambers published their 'Chambers's information for the people'. Under the rubric 'Logic' we find a description of investigation that is familiar as scientific method,

text: Investigation, or the art of inquiring into the nature of causes and their operation, is a leading characteristic of reason [...] Investigation implies three things – Observation, Hypothesis, and Experiment [...] The first step in the process, it will be perceived, is to observe...[96]

text: In 1885, the words "Scientific method" appear together with a description of the method in Francis Ellingwood Abbot's 'Scientific Theism',

text: Now all the established truths which are formulated in the multifarious propositions of science have been won by the use of Scientific Method. This method consists in essentially three distinct steps (1) observation and experiment, (2) hypothesis, (3) verification by fresh observation and experiment.[97]

text: The Eleventh Edition of Encyclopædia Britannica did not include an article on scientific method; the Thirteenth Edition listed scientific management, but not method. By the Fifteenth Edition, a 1-inch article in the Micropædia of Britannica was part of the 1975 printing, while a fuller treatment (extending across multiple articles, and accessible mostly via the index volumes of Britannica) was available in later printings.[98]

text: Current issues[edit]

text: In the past few centuries, some statistical methods have been developed, for reasoning in the face of uncertainty, as an outgrowth of methods for eliminating error. This was an echo of the program of Francis Bacon's Novum Organum of 1620. Bayesian inference acknowledges one's ability to alter one's beliefs in the face of evidence. This has been called belief revision, or defeasible reasoning: the models in play during the phases of scientific method can be reviewed, revisited and revised, in the light of further evidence. This arose from the work of Frank P. Ramsey[99] (1903–1930), of John Maynard Keynes[100] (1883–1946), and earlier, of William Stanley Jevons[101][102] (1835–1882) in economics.

text: Later in the 20th century, methodological naturalism was emphasized by Robert T. Pennock as central to scientific method, partly in response to rise of creation science.

text: Science and pseudoscience[edit]

text: The question of how science operates and therefore how to distinguish genuine science from pseudoscience has importance well beyond scientific circles or the academic community. In the judicial system and in public policy controversies, for example, a study's deviation from accepted scientific practice is grounds for rejecting it as junk science or pseudoscience. However, the high public perception of science means that pseuodoscience is widespread. An advertisement in which an actor wears a white coat and product ingredients are given Greek or Latin sounding names is intended to give the impression of scientific endorsement. Richard Feynman has likened pseudoscience to cargo cults in which many of the external forms are followed, but the underlying basis is missing. Fringe or alternative theories often present themselves with a pseudoscientific appearance.[citation needed]


document_title: Ancient (Stargate)

question_text: who made the nano virus in stargate atlantis

root

text: Ancient (Stargate)

text: History[edit]

text: The Ancients and the Ori[edit]

text: Millions of years ago, the first evolution of humanity known as the Alterans (from Latin alteri, "the others", though in canon, it descends from the Ancient's own language), lived in a distant unknown galaxy while proceeding along the evolutionary path to ascension. At the time, those who were later to be known as the Ori and the Ancients were not distinguished from each other, and lived in one society. However, a philosophical division emerged. Over time, the Ori grew more and more fervent in their religious belief, while the Ancients adopted a more scientific outlook. Ultimately, their viewpoints diverged so much that the two groups split apart and began to oppose each other, culminating in the Ori attempting to destroy the Ancients. Instead of going to war, the Ancients decided to leave their galaxy, and began searching for a new home. The Ori later used their departure to their advantage, including their departure in the Book of Origin, claiming that the mountain the Ancients leveled while leaving contained evil and that it was buried as the mountain collapsed.[1]

tag: p

text: After much time, believed by Daniel Jackson to be thousands of years, the Ancients discovered a "great belt of stars", which they named "Avalon" (Milky Way Galaxy) where they eventually built an impressive empire. The Ancients built Astria Porta (Stargates), which were spread out throughout the Milky Way.[2] Furthermore, the Ancients sent out "seed ships" to spread Stargates to other galaxies, along with Destiny, which was sent out after the "seed ships" to further investigate a pattern discovered in the Cosmic Background Microwave Radiation (Stargate Universe). Among the planets they settled was Earth, which they called Terra. The status of Earth in the Ancients' empire is currently unknown. However, as the planet's original Stargate, eventually discovered by SG-1 in Antarctica, was the oldest gate ever encountered, and being the eventual birthplace of the second evolution of humanity, Earth was probably one of their oldest, if not the first world, they settled upon arriving in this galaxy.[3] Also the nine-chevron address that dials the ship Destiny must use Earth as the point of origin, no matter what planet the Stargate is dialing from, so Earth must have been very important, possibly the capitol to their empire.  It was also once the location of one of the Ancients City Ships, Atlantis, before it moved to the Pegasus Galaxy, and it was where their descendants returned to after their defeat by the Wraith.[4] Other important planets they have colonized were Praclarush Teonas,[5] Dakara[6] and Valos Cor.[7]

text: Although exiled to another galaxy, the Ancients still remained in contact with their distant cousins, the Ori, evidenced by the discovery of long-range communication devices in both the Milky Way and their home galaxy.[8] Still, the two factions remained bitter enemies. Eventually, the Ancients were afflicted with a terrible plague that wiped out most of the civilization they had built in the Milky Way.[9] It would later be discovered that what was known of this plague is very similar to the disease used by Ori Priors against non-believers, which had led Daniel Jackson to speculate that the pre-Ascended Ori might have been responsible for this plague.[10]

text: Some Ancients apparently attempted to travel back through time to escape the plague, without much success.[9] Many others left the Milky Way to travel to the Pegasus galaxy.  It has been stated that the Ancients who remained in the Milky Way galaxy either ascended or died out.[9] However, according to Anubis, the Ancients had attempted to recreate life after the plague in the Milky Way using the Dakara Superweapon.[11] The evolution of humanity on Earth could be the result of this attempt.

text: Pegasus Galaxy[edit]

text: Five to ten million years ago,[4] several Ancients departed Earth in their city-sized spaceship, 'Atlantis' which at that time was situated on Earth, on the continent Antarctica. The exact reason for their departure is unknown, although Daniel Jackson speculated that they might have left to escape the plague that was devastating their civilization at the time.[4] One known Ancient (later named Ayiana by the researchers who discovered her perfectly preserved in Antarctica) was left behind. The fact that Ayiana was infected with the Ancients plague when she was revived would seem to confirm Jackson's conjectures.[3]

text: After arriving in the Pegasus Galaxy, the Ancients settled on a planet they named 'Lantea', calling themselves 'Lanteans'[12] from that time forward (also, they have been referred to as 'Atlanteans' by members of the Atlantis Expedition - a name often used by the peoples of Pegasus to describe the expedition members). Finding Pegasus devoid of sentient life, the Ancients dispersed humans and Stargates across their new home galaxy, protecting the newly populated planets and occasionally inhabiting them (usually concealing their true identities as Ancients). The humans seeded by the Ancients came to know them as 'the Ancestors'.[4] At some point they encountered a leech-like organism called the 'Iratus bug', which possessed impressive healing and immunological capabilities. Through feeding on humans (and processes of evolution), this organism absorbed genetic information from humans and eventually evolved into the vampire-like Wraith.[13] Although it remains unknown precisely how this evolution occurred, the Ancients have confirmed that they were responsible for the species' emergence.[14]

text: The Wraith, over a vast period, developed into an advanced but violent society (with vestiges of territorialism that were later harshly revived when their prey became scarce) - all the while avoiding the attention of the Ancients. When the sentient Wraith were discovered by the Ancients, it appears their ferocity, belligerence and large population were underestimated. The Ancients sent a delegation protected by their most powerful warships to negotiate with the Wraith, but the ships were ambushed and destroyed. The Ancients and Wraith went to war, and despite the Ancients' technological superiority, the Wraith overwhelmed the Ancients with their sheer numbers. During their war which lasted for centuries, the Wraith eventually conquered every planet in the Pegasus Galaxy until only Atlantis, the capital of their empire, remained protected by its powerful city shield.

text:
The Ancients were able to hold the Wraith back with their superior weapons for a hundred years, until they were forced to submerge the city and to leave the Galaxy, for no matter how long they stalled the destruction of Atlantis, the Lanteans were unable to overcome the endless number of Wraith.[4] They started to make more desperate experiments, such as Project Arcturus, a failed attempt to draw Zero Point Energy from their own universe, instead of from within an artificially created region of subspace as in Zero Point Modules. However, containing zero point energy in our own space-time caused serious containment issues, killing the Ancients and the people of Doranda, the planet it was based on.[15] They also developed nanites designed to fight the Wraith on a cellular level, giving them aggression codes surpassing that of the Wraith. The nanites took human form, becoming a race known as the Asurans. They begged to have the aggressive nature removed from their programming, but the Ancients refused. Once it became clear the Asurans would never be the weapon the Ancients hoped for, they were subsequently exterminated by the Ancients. Not wanting anyone to find out their mistakes, the Ancients deleted all references to the Asurans in the Atlantis database, save for the gate address. A few of the nanites survived and brought up a second evolution, re-creating Asuran society.[16]
It is believed that at one point in time the Asurans even created several nano-viruses specifically designed to kill humans, so as to deprive the Wraith of a food supply. One such virus, which causes hallucinations and death caused by a brain aneurysm, was encountered in a lab on Atlantis. Janus, an Ancient scientist, also built a device called the Attero device, which emitted a specific frequency of subspace distortion, causing Wraith ships to explode when attempting to enter hyper-space. It was later shut off and ordered to be destroyed (an order Janus, as usual of him, disregarded), because the same frequency which damaged the Wraith ships also caused an explosive overload in active Stargates.

text: The Ancients also pursued technological means of accelerating the process of Ascension through a variety of mediums. Before the war reached its final stages, they selected a hospitable planet and enclosed a portion of its surface inside a time-dilation field. Within the field, time passed much more quickly than outside, allowing the humans within to spend many generations undisturbed in seclusion and meditation in order to reach ascension, whilst remaining undisturbed by the Wraith.[17] On Atlantis, they built a DNA Resequencer designed to modify DNA, fulfilling the physiological component of ascension. This had varying results.[18]

text: Eventually, the Ancients realized that the war was lost, and those who had not already ascended, decided to return to Earth, the planet that had been home to them for millions of years. As they were making the final preparations to leave, Dr. Elizabeth Weir appeared from the future in a modified Jumper. The High Council of Atlantis, fearing further damage to the timeline, ordered the scientist who built the machine, Janus, to dismantle it. They offered Weir the chance to return to Earth with them, forbidding her to return to her time. Janus, in order to help preserve the city in the future, reconfigured Atlantis's three ZPMs to run in sequence instead of in parallel, and left Dr. Weir behind in stasis to rotate them out. The Ancients evacuated the city via the Stargate, hoping it would eventually be rediscovered by their descendants.[19] A few isolated groups of Ancients were left stranded in the Pegasus Galaxy and either lived out the rest of their lives with the humans, or found a way to ascend. At least one warship, the Tria, attempted to reach Earth using modified sublight engines that ran at 99.9% of Light Speed after the ship's Hyperdrive was destroyed.

text: Return to the Milky Way[edit]

text: After the Ancients returned to Earth, they found only a harsh environment and primitive inhabitants. It was believed that there was no hope of rebuilding their former civilization. So they spread out to distant lands and helped to populate them. Others would depart the planet through the Stargate located in Antarctica, possibly seeking to live out their days on distant worlds within the Milky Way. The remainder chose isolation in which to meditate and seek enlightenment. This would eventually lead to a spiritual ascension for some.[7]

text: Those Ancients who stayed on Earth and interbred with humans passed on the Ancient Technology Activation gene[4] marking the humans of Earth as their "Second Evolution" as well as giving civilization to the people.[7] They would also lay cultural foundations by way of the Indo-European languages. Through this cultural and linguistic inheritance many Roman myths were also influenced by the Ancients, such as the myth that the "Ancient ones ascended to the Heavens". According to mythology, the Romans learned how to build roads from gods known as "The Ancient Ones" in mimicry of the "astria porta" constructed by the ancients.[20]  Indeed, Daniel Jackson later determined that the Ancient language vaguely resembles Old Latin.  This was first discovered when Colonel O'Neill had the entire database of an Ancient repository of knowledge downloaded into his brain, after which he became incapable of speaking in anything other than the Ancients' language.[20]  Using this vital insight, Dr. Jackson compared previously indecipherable Ancient writings with Old Latin, factoring in millennia of linguistic drift, and was eventually able to produce functional translations of much of it.  Two years later, Earth and a pocket of surrounding space became trapped in a repeating time loop caused by a malfunctioning Ancient time machine.  Only O'Neill and Teal'c were not affected because they were standing near the device when the loop began.  With Dr. Jackson trapped in the loop and unable to study the time machine's writings thoroughly before his memory was reset, the only choice was for O'Neill and Teal'c to learn the Old Latin/Ancient language from Dr. Jackson in incremental steps, until they learned enough of it to discover the nature of the device.[9]

text: The Arthurian Legends were also shown to be influenced by the Ancients, in particular the Ancient Myrddin/Merlin, (Known as Moros, in Atlantis where he headed the Council prior to his Ascension), who appeared to have ascended after returning from Atlantis, but later de-ascended himself to create a weapon that can destroy ascended beings, which he hoped would be used against the Ori. Merlin became known as Arthur's wizard counselor in legends, and the weapon he developed became known as the Sangraal or Holy Grail. He also entrusted his secrets to a small group of nobles which consisted of King Arthur and the Knights of the Round Table.[21]

text: Some of the Ancients, presumably those who left Earth, set up the Alliance of Four Great Races including themselves, the Nox, the Furlings and the Asgard. Together, they created a "true" universal language. According to writings discovered on Heliopolis, this alliance lasted for centuries.[22]

text: Recent history[edit]

text: After the Ancients' ascension they continued to oppose their former nemesis, the Ori, who had also reached Enlightenment. Although the two factions were deadlocked in strength, the Ori were still bent on destroying the Ancients once and for all. The Ancients probably outnumbered the Ori as the ranks of the ascended Ori were not swelled by new ascendants, rather they preferred to hoard the energy they derived from their own mortal worshipers, sapping power from this second evolution of humanity created in their own galaxy to gather enough strength to, ultimately, attack the Ancients. In response, the Ancients chose to hide their own second evolution created in the Milky Way from the Ori[1] with the sole purpose of protecting the Milky Way humans from being coerced into forced religious servitude to the Ori, and thus used as a resource for the Ori to empower themselves. To this end they also probably influenced the association of fire, the central icon of the Ori religion, with demonic imagery.[8] Still, they refused to take direct action because of their strict self-imposed edict of self-determination.[7]  It is also likely that the Ancients knew the slippery slope of addiction to empowerment by way of the worship of `Lowers` and understood that there was a danger in this reliance, giving the Ori and later Adria a weakness despite `God` like powers. There are several examples of "lowers" praying and giving thanks to the Ancients/Ancestors in the Pegasus Galaxy. Such as "The Tower", even an exiled Ancient on a planet where the people worship her as "Athar" in the Stargate Atlantis episode, "Sanctuary."

text: The first ascended being ever encountered by the Tau'ri was Oma Desala, when SG-1 arrived on the planet Kheb in their search for Shifu, the young son of Apophis and Sha're. During their stay, the team discovered a Buddhist temple, where a single monk appeared to reside. The monk spoke in riddles, but spoke about a being called Oma Desala, a name Daniel Jackson translated as "Mother Nature". Eventually, when the team was preparing to defend the temple from several Jaffa warriors, Daniel discovered a non-corporeal being living on Kheb.[23] He eventually formed a personal bond with Oma Desala, who even helped him to ascend on two occasions.[11][24]

text: Three years later, an Ancient woman, Ayiana, was found frozen in Antarctica near the location of the Antarctica Stargate. She revived herself when thawed, but was still infected with the plague and died exhausted from healing SG-1 and others from the Plague.[3] Apparently, she was left behind in the Ancient outpost in Antarctica, for carrying the plague, when Atlantis left for the Pegasus Galaxy.[4]

text: When an Aurora class battleship was discovered by the Daedalus, between the Pegasus and Milky Way galaxy, the crew was still alive. As the ship was traversing the inter-galactic expanse between Pegasus and the Milky Way Galaxies, close to light speed, the crew had only experienced a handful of years, because of the time dilation effect of near speed of light travel, since the evacuation of Atlantis. After learning that Atlantis had survived the Wraith, they reclaimed the city. When the Asurans returned and captured the city, all the remaining Ancients were executed.[14]

text: After Daniel Jackson and Vala Mal Doran inadvertently alerted the Ori to the existence of another galaxy filled with humans, starting the Ori invasion of the Milky Way,[8] millions of humans were converted to the oppressive Ori religion, feeding them only more power. According to the Ori themselves, the entire conversion of the Milky Way would probably give them enough strength to destroy the Ancients once the crusade was over. Still, most of the Ancients refused to intervene, even though their own existence is threatened. Exceptions include Morgan le Fey and Merlin.[7]

text: SG-1 eventually discovered Merlin in stasis inside a cave on a barren planet. He was revived by the team, and assisted them with constructing the Sangraal, the weapon he had designed to combat the Ori. Although he died before he was able to complete the device, he downloaded the necessary information into a Repository of Knowledge.[25]

text: Eventually, when the Sangraal was complete, the Ancients didn't interfere for unknown reasons and allowed it to go to the Ori galaxy. The Sangraal did its job and destroyed, although Daniel Jackson says a better translation would be "cancels out or neutralized", the Ori.[26] Adria, the de facto leader of the Ori army ascended, taking on the full mantle of the dead Ori. When the humans from the Milky Way traveled to the Ori galaxy and discovered the Ark of Truth, Adria's power was significantly reduced when the Ark was used to "show" the truth to the Doci, and subsequently all the Priors in their home galaxy, which enabled Morgan, who was exiled by the Others, to engage Adria in eternal battle.

text: Physiology[edit]

text: Pre-Ascension[edit]

text: Although the Ancients appear to be human in appearance their physiology is much more advanced. The main characteristic differentiating the Ancients from ordinary humans is what modern humans on Earth have come to call the Ancient Technology Activation gene, a protein that allows for a contact-based neural interface with late-era Milky Way and all Pegasus-era technology. This protein is unique to, and naturally occurring in, all Ancients. However, due to genetic inheritance from the Ancients who returned to Earth after they were forced to abandon Atlantis, a small percentage of modern humans on Earth possess the gene.[4] Shortly after the beginning of Stargate Atlantis, Dr. Carson Beckett developed a gene therapy that integrated the genetic marker into those whom it was not already naturally occurring, allowing them to interact with all of the Ancient technology on Atlantis and elsewhere in the Pegasus galaxy.[27]

text: It has been established that the Ancients are actually the "first evolution" of humanity, originating in a distant galaxy from the Milky Way. At some point in their races history, an ideological schism occurred between two factions who later became known as the Ancients and "Ori", the former advocating the values of science and reason, while the latter championed religious devotion, respectively. This schism resulted from the threat the Ancients felt from the Ori's religious zeal, prompting a mass exodus by the Ancients from their home world via a large ship.[2] After a presumably long voyage the Ancients arrived in the Milky Way galaxy where they colonized a number of planets, notably Earth. After tens of millions of years they emigrated to the Pegasus galaxy to survive, having seeded life in the Milky Way before they left. Upon returning to the Milky Way approximately ten million years later, the Ancients encountered an Earth populated by a new evolution of humanity, thus it is implied that the current human species evolved as such due to the actions of the Ancients, since two species progressing along identical evolutionary paths is extremely improbable.[3][19]

text: Toward the end of their evolutionary development, but still before they ascended, the Ancients developed advanced abilities, such as telekinesis, extraordinary sensory abilities, and the ability to heal others.[3]

text: Ascension[edit]

text: Eventually, the Ancients were able to ascend, thus shedding their physical form and existing as pure energy on a "higher plane" of existence. Although this new state of being grants them god-like powers, they adhere to a sort of "Prime Directive" which forbids them from influencing the unascended.

text: The ability to ascend is not limited to Ancients, as both humans and Goa'uld have been able to ascend.

text: Philosophy[edit]

text: The Ancients are well known for their fierce belief in free will. As such, they do not interfere on lower planes of existence at all, not even to save their own kind from being exterminated by the Ori.[7] As punishment for breaking this law, the Ancients have been known to wipe out entire civilizations and abandon the one responsible to correct the grave mistakes caused by one of their people.[28] They have also forced (or tried to force) transgressors to descend back to corporeal form.[29] Ancients are, by every means, capable of drastically altering courses of events at will.

text: What exactly constitutes law-breaking is open to debate. Interfering "a little bit", as Vala Mal Doran described it, will be tolerated.[7] Examples of this include the killing of several Jaffa troops[23] and giving the coordinates of Sahal and Castiana to Daniel Jackson.[7] Also, some Ancients, like Oma Desala, repeatedly assists "those beneath" in ascending. Those who follow her are forced to walk a very fine line.[30] Other Ancients who have been reprimanded for interfering in the mortal planes include Orlin[28] and Chaya Sar.[31]

text: The Ancients' viewpoints completely oppose those of their distant cousins, the Ori. The Ori religion states that failure to share the secrets of the universe to those on the lower planes of existence is an evil act and that anyone not following it must be eliminated. They also have no rules against taking direct control of living beings or completely changing them to behave as they desire.[8]

text: This difference in beliefs is not without its reasons. According to a de-ascended Ancient, Orlin, ascended beings can be empowered by massive numbers of humans worshiping them. The Ori have fabricated an entire religion based on the false promise of ascension to drain power from their followers. The Ancients firmly resent using their powers this way, and therefore refrain from interfering in the lower planes of existence as manipulating and aligning lower life forms in some order could result in exactly this type of abusive corruption.[1] As Morgan le Fay said, if they were to interfere, they would be no better than the Ori.[7]

text: As a result, the Ancients have shielded the second evolution of humans (i.e. current human culture) in the Milky Way from the Ori (and although it has never been stated, they most likely did the same for the seeded humans in the Pegasus Galaxy and Ida galaxy [the Asgard home galaxy]) and still prevent the Ori from taking direct action in the Milky Way. However, as the Ancients will not interfere in the lower planes of existence, the Ori are allowed to send their human followers to the Milky Way to convert it, and anyone who wishes to worship the Ori will be allowed to do so.[8]

text: Even though the Ancients do not believe in interfering in mortal affairs, it is speculated that they are responsible for generating the associations of fire with Demonic imagery in the Milky Way. This would be another method of shielding humans from the Ori, as the central symbols of Origin involve fire. As Daniel Jackson pointed out, there is no immediate illogicality with fire as a symbol of all that is good: it provides warmth, light, etc.[8]

text: Also, even before their ascension, the Ancients had strict rules on time travel, although this rule has been broken as well. The Ancient scientist Janus developed time travel technology, leading to Elizabeth Weir using it to travel back to Atlantis 10,000 years previously,[19] and to a column containing a history of future events on the Milky Way planet ruled by Harry Maybourne.[32]

text: Technology[edit]

text: Ancient technology is among the most advanced encountered in the Stargate universe rivaled only by the Ori, who are the same race as the Ancients, and the Asgard who revealed some of their most advanced technologies only shortly before their extinction. Their technology was so advanced that even after 10,000 years with no advancements, it is still superior to the Asgards[33] and the Ori.  Among their many achievements, the Stargates and Atlantis are perhaps their most famous, but they have also developed technology as diverse as flying cities, advanced power sources, advanced healing devices and DNA Resequencer (Stargate). Much of the Ancients' weapons technology was used or designed for use in the centuries-long war with the Wraith in the Pegasus Galaxy.

text: Much of Ancient technology requires the presence of the ATA gene to use, such as the Ancient weapon system in Antarctica, but numerous instances requiring only the gene to activate it, once active anyone can use it regardless, for instance much of the day to day technology of Atlantis.

text: Language and writing system[edit]

text: The Ancients' language is a precursor of Latin, but it is still distinct. There are many similarities between the two languages, and someone with a decent knowledge of Latin may, given time and practice, be able to understand Ancient as well.[20] The Ancient language and writing system is also used by the Ori and their followers, who share the same ancestry.[2] Since the Wraiths were created by the Iratus bug absorbing Ancient DNA, the Wraiths' language seems to be a derivative of the Ancient language, and the two use the same writing system. The Wraiths' language is therefore relatively easy to translate by experienced Ancient speakers.[34]

text: The Ancient language has a unique writing system that has no analogues with any known Earth alphabet. Ancient letter are squarish and dominated by right angles, and as a full letter, a letter contains 24 squarish dots. There are 25 distinct letters ('F' and 'U' are the same character) and 10 numerals (from 0 to 9) in the Ancient-English conversion. It has been mentioned though that the Ancients have an Octal counting system, meaning based on 8, not like the decimal system of the Tau'ri, based on 10, although the Stargate Universe symbols include symbols for 8 and 9.[20] Exactly how the characters were used by the Ancients is unknown. It has been mentioned that some Ancient characters have different meanings when read upside down.[6] The Ancient writing system has been shown to be learnable with moderate difficulty by humans. However, the pronunciation of Ancient words has fluctuated during the millennia the language was used.[7]

text: Passages written in Ancient on the shows can be transliterated into English (there are no characters for spaces and punctuation marks). These transliterations show that the in-show writing system rules do not necessarily apply in reality,[6] but they sometimes reveal in-jokes or offer further (non-canon) information instead. For example, parts of the writings on Atlantis main screens include the beginning of the nursery rhyme Where Oh Where Has My Little Dog Gone?, and the text shown on Daniel's laptop in the episode "Affinity" can be transliterated into "Actual words are hard to deciph(er) so this(')ll work". Playback supervisor Krista McLean said that when she originally put the graphics together for the Atlantian holo screens, she carelessly used things that were going through her head. When fans translated the language on the internet, she became more careful and tried to not use direct English translations anymore.[35]

text: There are also many examples that are in keeping with what the Ancients and associated races intended – the writings on the stairs in the gate-room on Atlantis translate into a sort of greeting for travelers; Puddle Jumper consoles include instructions on how to use the ship; the Ancient wall in "Reckoning" describes the use of the Ancient object hidden behind, and the responsibilities that go with it. The sign in Harrid and Sallis' house in the Ori galaxy in "Avalon" says what Daniel translates it to be ("This is the nuptial home of \\ Harrid and Sallis Cicera"). The engraved Sodan flagstones in "Babylon" give instructions on how to behave in Sodan society.

text: The Athosians in the Pegasus Galaxy say their prayers in Ancient.[27]

text: Characters[edit]

text: Although most of the Ancients had reached ascension long before the dawn of modern civilization on Earth, the Tau'ri have come in contact with Ancients on several occasions, both in ascended and corporeal form. Most of the corporeal Ancients were encountered in the Pegasus Galaxy, where their empire had collapsed only some 10,000 years ago. Also, some Ancients helped humans on the lower planes of existence ascend, like Oma Desala helped Daniel Jackson.