They're really in a different league. My favorite example is the ad-hoc stack analysis that Python lets you do -- and not just of the current stack, but of alre

They're really in a different league. My favorite example is the ad-hoc stack analysis that Python lets you do -- and not just of the current stack, but of already-exited stack frames! This is free in CPython but prevents sizable performance gains from JITs (I don't remember the exact numbers, but I think it was multiple percent).