The Logic of Scientific Discovery

Logik der Forschung appeared in 1934 when Popper was thirty-two, published in Vienna on the eve of the political catastrophe that would drive him from Europe. The English translation, The Logic of Scientific Discovery, did not appear until 1959 — a delay that gave the book a second life in the Anglophone philosophical world just as the postwar philosophy of science was consolidating. The central argument is compact and devastating. Science, Popper claimed, does not advance by accumulating confirmations of theories but by subjecting theories to serious attempts at refutation. The asymmetry between verification and falsification is not a technical detail but the engine of all genuine knowledge. A theory earns its scientific status not by what it can explain but by what it forbids — by the observations that would refute it if they occurred. This single move reshaped the demarcation problem, the methodology of inquiry, and eventually the standards by which claims to knowledge are evaluated across fields