Why is Karl Popper important for Philosophy world ?
The credibility criterion is the basis of Popper’s theory of science. His view of the scientific method is based on the falsification of every theory in order to select a system that “undergoes a rigorous testing of all systems and, at the end, is relatively favorable”. For Popper, theories can never be experimentally confirmed because of the invalidity of the principle of induction. But it’s wrong. Therefore, a theory must be falsifiable for it to be scientific. Popper was interested in Einstein’s relativity theory, Marx’s understanding of history, Freud’s psychoanalytic theory, and Alfred Adler’s individual theories of psychology. In particular, an approach proposed by Einstein’s theory (the rays of light passing near the sun under the influence of the gravitational field of the sun undergoes bending) influenced Popper in 1919 during a solar eclipse.