This is an extremely important question. Empirically, exit visas seem like an extremely good feature for having a fucked-up country (North Korea, USSR, Warsaw P

This is an extremely important question. Empirically, exit visas seem like an extremely good feature for having a fucked-up country (North Korea, USSR, Warsaw Pact, Nazi Germany, Fascist Italy all had them, Saudi Arabia does for foreign workers, and very few others have them)