+Popper refers primarily to Karl Popper, an influential 20th-century philosopher. He championed [Falsifiability](/wiki/falsifiability) as the hallmark of [Science](/wiki/science), arguing that theories must be open to refutation to be truly scientific. His insights transformed the philosophy of scientific discovery.
+## See also
+- [Karl Popper](/wiki/karl-popper)
+- [Scientific Method](/wiki/scientific-method)
+- [Epistemology](/wiki/epistemology)
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