Observing a million white swans tells you nothing certain about the universe, but a single black swan destroys the rule that all swans are white. This episode digs into falsifiability, the idea that the hallmark of a strong scientific theory is not how much evidence supports it but whether it could theoretically be proven wrong. The discussion begins with David Hume's problem of induction and the circular trap of justifying repeated observation with repeated observation, then turns to Karl Popper, who accepted that induction is a myth and argued that science progresses through bold creative guesses subjected to ruthless attempts at refutation.

The conversation explores how Popper's observation of Freud and Adler's psychoanalysis, which could explain any behavior and therefore predicted nothing, led to his demarcation criterion in The Logic  ...