Interesting! If a place becomes too popular it attracts too many different species into the area. That would lower the birth rate because there would be more marriages between dissimilar species. It might lower it enough that you would have a population die-back. Then people would move out of that situation because they would want their kids to marry into their own species to continue the family line. So large cities would eventually become nearly dead cities. That would limit the size that cities could grow to. Just thinking out loud. :)
Received on Thu Mar 27 2014 - 13:20:37 CDT