Psychohistory vs. Free Will

Asimov and Herbert wrote the two most famous models of predicting the future — and both models fail in exactly the same way. Asimov's psychohistory treats people as particles: predict the crowd, ignore the individual. Herbert's prescience does the opposite: one person sees every possible future. Both systems get hijacked. Asimov's by an individual who shouldn't exist (the Mule). Herbert's by the trap of perfect knowledge (Paul can't unsee what he's seen). The lesson the library keeps teaching: any system built to predict human behavior becomes the thing humans most need to escape.