Summary
Highlights
Inductive reasoning relies on prior theories to assess data, meaning scientists always interpret data through existing theoretical perspectives, hence science is not purely observation-driven but theory-guided.
Karl Popper proposed that science is critical and never takes anything for granted. He believed scientists actively try to prove their own theories false (falsification), distinguishing real scientists from pseudo-scientists.
Popper argued that scientists do not use induction but only deduction, thus eliminating the need for background theories. This radical idea aimed to show science as unbiased by prior theoretical perspectives.
Popper stated that scientists do not draw general conclusions or claim theories are true, but rather aim to falsify them. A 'falsification' is an observation that proves a theory wrong. The philosophy is called falsificationism, relying on deductive reasoning, where if an observation contradicts a theory, the theory is false.
While Popper's idea of falsification using deduction seems logical, philosophers largely disagree with his claim that scientists are only interested in falsification. They point out that scientists commonly claim to know many things.
A deeper look reveals issues with the logic of falsification. The premise that an observation directly proves a theory false often relies on unstated assumptions (e.g., proper experimental conditions, correct identification of subjects). These assumptions form a substantial background theory.
Falsification, like induction, requires a background theory and assumptions. Therefore, Popper's ideas, despite their popularity, do not offer an alternative to the standard view of induction, as science cannot operate without it.