Timeline of the history of scientific method
Manjunath R
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Manjunath R
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- c. 1600 BC — The Edwin Smith Papyrus, an Egyptian surgical textbook, which applies: examination, diagnosis, treatment and prognosis, to injuries, paralleling rudimentary empirical methodology.
- 624 - 548 BC — Thales raised the study of nature from the realm of the mythical to the level of empirical study.
- 610 - 547 BC — Anaximander extends the idea of "law" to the physical world and uses maps and models.
- c. 400 BC — In China, Mozi and the School of Names advocate using one's senses to observe the world, and develop the "three-prong method" for testing the truth or falsehood of statements.
- c. 400 BC — Democritus advocates inductive reasoning through a process of examining the causes of sensory perceptions and drawing conclusions about the outside world.
- c. 400 BC — Plato first provides a detailed definitions for idea, matter, form and appearance as abstract concepts.
- c. 320 BC — First comprehensive documents categorising and subdividing knowledge, dividing knowledge into different areas by Aristotle,(physics, poetry, zoology, logic, rhetoric, politics, and biology). Aristotle's Posterior Analytics defends the ideal of science as necessary demonstration from axioms known with certainty. Aristotle believes that the world is real and that we can learn the truth by experience.
- c. 341-270 BC — Epicurus scientific method with multiple variables.
- c. 300 BC — Euclid's Elements expound geometry as a system of theorems following logically from axioms known with certainty.
- c. 240 BC — Eratosthenes best known for being the first person to calculate the circumference of the Earth, which he did by applying a measuring system using stadia, which was a standard unit of measure during that time period. His calculation was remarkably accurate.
- c. 200 BC — First Cataloged library (at Alexandria)
- c. 150 BC — The Book of Daniel describes a clinical trial proposed by Daniel in which he and his three companions eat vegetables and water for 10 days rather than the royal food and wine.
- c. 90-168 — Claudius Ptolemy
- c. 721-873 — 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) and Alkindus (801–873).
- 1021 — Ibn al-Haytham introduces the experimental method and combines observations, experiments and rational arguments in his Book of Optics.
- c. 1025 — Abū Rayhān al-Bīrūnī, develops experimental methods for mineralogy and mechanics, and conducts elaborate experiments related to astronomical phenomena.
- 1027 — In The Book of Healing, Avicenna criticizes the Aristotelian method of induction, arguing that "it does not lead to the absolute, universal, and certain premises that it purports to provide", and in its place, develops examination and experimentation as a means for scientific inquiry.
- 1220–1235 — Robert Grosseteste, an English scholastic philosopher, theologian and the bishop of Lincoln, published his Aristotelian commentaries, which laid out the framework for the proper methods of science.
- 1265 — Roger Bacon, an English monk, inspired by the writings of Grosseteste, described a scientific method, which he based on a repeating cycle of observation, hypothesis, experimentation, and the need for independent verification. He recorded the manner in which he conducted his experiments in precise detail so that others could reproduce and independently test his results.
- 1327 — Ockham's razor clearly formulated (by William of Ockham) which states that among competing hypotheses, the one with the fewest assumptions should be selected.
- 1403 — Yongle Encyclopedia, the first collaborative encyclopedia
- 1581 — Francisco Sanches uses classical skeptical arguments to show that science, in the Aristotelian sense of giving necessary reasons or causes for the behavior of nature, cannot be attained.
- 1581 — Tycho Brahe builds large scale research facility, Stjerneborg dedicated to obtaining high precision measurements of the planets.
- 1595 — Microscope invented in the Netherlands
- 1600 — First dedicated laboratory
- 1608 — Telescope invented in the Netherlands
- 1620 — Novum Organum published, (Francis Bacon)
- 1637 — First Scientific method (René Descartes)
- 1638 — Galileo's Two New Sciences published, containing two thought experiments, namely Galileo's Leaning Tower of Pisa experiment and Galileo's ship, which are intended to disprove existing physical theories by showing that they have contradictory consequences.
- 1650 — Society of experts (the Royal Society)
- 1650 — Experimental evidence established as the arbiter of truth (the Royal Society)
- 1665 — Repeatability established (Robert Boyle)
- 1665 — Scholarly journals established
- 1675 — Peer review begun
- 1687 — Hypothesis/prediction (Isaac Newton)
- 1739 — David Hume's Treatise of Human Nature argues that the problem of induction is unsolvable.
- 1753 — First description of a controlled experiment using identical populations with only one variable: James Lind's research into Scurvy among sailors.
- 1763 — Reverend Thomas Bayes published An Essay towards solving a Problem in the Doctrine of Chances laying the basis for Bayesian inference, a method of inference used to update the probability estimate for a hypothesis as additional evidence is acquired.
- 1812 — The formulation by Hans Christian ?rsted of the Latin-German mixed term Gedankenexperiment (lit. experiment conducted in the thoughts, or thought experiment). Although the method had been in use by philosophers since antiquity.
- 1815 — An optimal design for polynomial regression is published by Joseph Diaz Gergonne.
- 1833 - William Whewell invents the term scientist. They had previously been known as natural philosophers or men of science.
- 1840 - William Whewell in Philosophy of the Inductive Sciences coins the term "consilience" the principle that evidence from independent, unrelated sources can "converge" to strong conclusions.
- 1877–1878 — Charles Sanders Peirce publishes "Illustrations of the Logic of Science", popularizing his trichotomy of Abduction, Deduction and Induction. Peirce explains randomization as a basis for statistical inference.
- 1885 — C. S. Peirce with Joseph Jastrow first describes blinded, randomized experiments, which become established in psychology.
- 1897 — Thomas Chrowder Chamberlin proposes the use of multiple hypotheses to assist in the design of experiments.
- 1905 — Albert Einstein proposes the Theory of Relativity
- 1926 — Randomized design popularized and analyzed by Ronald Fisher (following Peirce)
- 1934 — Falsifiability as a criterion for evaluating new hypotheses is popularized by Karl Popper's The Logic of Scientific Discovery (following Peirce)
- 1937 — Controlled placebo trial
- 1946 — First computer simulation
- 1950 — Double blind experiment
- 1962 — Meta study of scientific method (Thomas Kuhn's The Structure of Scientific Revolutions)
- 1964 — Strong inference proposed by John R. Platt
- 2009 — Adam - First working prototype of a "robot scientist" able to perform independent experiments to test hypotheses and interpret findings without human guidance.
- 2012 — Constructor theory, a proposal for a new mode of explanation in fundamental physics, was first sketched out by David Deutsch.