Yep overcrowded, if all things remain equal (as they are). They will likely be confused and at each others throats. I'm sure they'll reduce numbers down to a billion or so through war. The only problem is there certainly won't be enough fresh water or much fertile land and most areas would become blood stained.crowded.
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And culturally polarized, people would start being angry at each other.
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So I guess much like the future we are headed towards.
didn't i tell you not to talk to me untill u bring me teh enel scanz????..I wonder if we'd kill them. Plenty of them wouldn't speak any of the languages we do..Really wouldn't want to let them past borders and their numbers would probably entail the death of whole species if they resorted to hunting. I really do think they'd be killed off. Plenty might find purpose in retelling the history of their homes and times, but I really don't see how this could work out. 100% of earth belongs to some country and no country would want them all.