It might be far from fool-proof, but I think it might have the same effect as terrestrial oceans / distance had in the past. Oceans and long distances have alw

It might be far from fool-proof, but I think it might have the same effect as terrestrial oceans / distance had in the past. Oceans and long distances have always allowed wildly different governments and cultures to flourish contemporaneously; these barriers have become lower and lower lately, but space-scale distances might bring them back.