“The word 'proof' should strictly only be used when we are dealing with deductive inferences.... Popper claimed that scientists only need to use deductive inferences.... So if a scientist is only interested in demonstrating that a given theory is false, she may be able to accomplish her goal without the use of inductive inferences.... When a scientist collects experimental data, her aim might be to show that a particular theory...is false. She will have to resort to inductive reasoning.... So Popper's attempt to show that science can get by without induction does not succeed.” PhilosophyScienceLogicPhilosophy Of ScienceKarl PopperDeductive LogicInductive Logic Book:Philosophy of Science: A Very Short Introduction Source: Philosophy of Science: A Very Short Introduction
“The failure of Popper's demarcation criterion throws up an important question. Is it actually possible to find some common feature shared by all the things we call 'science...'? It may be that they share some fixed set of features that define what it is to be science, but it may not.... If so, a simple criterion for demarcating science from pseudo-science is unlikely to be found.” PhilosophySciencePhilosophy Of SciencePseudoscienceKarl Popper Book:Philosophy of Science: A Very Short Introduction Source: Philosophy of Science: A Very Short Introduction