[pmulcahy11b]

Humans have to be mutts. Homo sapiens is one of the most generalized animals nature has ever produced -- our species basically has no specializations adapting it for any specific climate or environment, except that it in general not be too hot or too cold. Our chief survival adaptation is our brains, and to a lesser extent, our hands. Our survival depends on the exchange of ideas. There is a debate among scientists as whether Homo sapiens is still physically evolving, or whether we've short-circuited that with science. Bad genes don't get culled from our species like they used to.