Paul Feyerabend argued that there is no single, universal scientific method that scientists must always follow. Scientific progress often occurs because scientists break accepted methodological rules, an approach he called epistemological anarchism.
Feyerabend’s argument
In Against Method (1975), Feyerabend challenged the view that science advances through a fixed procedure such as observation, hypothesis formation, experimentation and falsification. The history of science, he argued, shows that successful scientists have used many different methods, including methods considered irrational by the standards of their time.
His famous phrase “anything goes” summarizes this rejection of universal methodological rules. It does not mean that every belief is equally true or that scientists should work carelessly. Rather, no rule should be treated as absolute because rigid obedience may prevent the development of new theories.
Feyerabend used Galileo’s defence of heliocentrism as an example. Galileo’s evidence was not initially decisive, and he relied partly on persuasion, reinterpretation and assumptions that conflicted with established observations. For Feyerabend, this showed that scientific progress can require counterinduction: developing ideas that oppose accepted theories or available evidence.
| Conventional account of science | Feyerabend’s criticism |
|---|---|
| One rational method guides scientific inquiry | Scientific practice uses diverse and changing methods |
| Evidence alone determines theory choice | Persuasion, historical context and background assumptions also matter |
| Breaking methodological rules is unscientific | Rule-breaking can enable scientific progress |
| Science has uniquely privileged authority | Other traditions and forms of knowledge should not be dismissed automatically |
His argument also supports theoretical pluralism: competing theories should be encouraged because alternatives expose hidden assumptions and create new ways of interpreting evidence.
Exam technique
In an IB Philosophy response, explain the claim before evaluating it. Use Galileo as a supporting example, then consider the objection that abandoning shared standards could make it difficult to distinguish reliable science from pseudoscience. Avoid the common misconception that “anything goes” is a literal endorsement of irrationality; it is primarily an attack on compulsory, universal methodological rules.
