A machine-checked theorem proves that no sufficiently expressive reflexive system — no formal logic, no computer, no physical universe, no mind — can internally exhaust its own realized semantics. Physical incompleteness, representational incompleteness, and the classical barriers of Gödel, Turing, Kleene, Tarski, and Löb are all corollaries of one result.… Read More “Closure Without Exhaustion: Why Every System That Models Itself Has an Irreducible Remainder”