Jan Kulveit: predicting few-body interactions is hard, million-part systems get easier again
gleech · x · 2026-09-03
Jan Kulveit shares his central intuition on complex systems: interactions of one or two things are often predictable, then it gets hard, but as complexity grows it gets easier again — sensible claims are often possible about systems with millions of parts. He cites universality classes, scaling laws, and network statistics as the mathematically beautiful versions. He also frames "complex systems" largely as a sociology-of-science phenomenon: a brand granting academic license to apply physics/statistical-mechanics thinking to social and biological systems.
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