ballistic
Good thoughts Abaddon, but you fail to address the fact that humans who live in welfare states such as England have in effect taken thenselves out of the evolutionary model.
Sorry mate, sixty years cannot overcome thousands. And the welfare state is part of the extended genotype humans have created to increase the average chances of survival of a population, like towns, clean drinking supplies and extinction of dangerous species. What you see taking an organism OUT of the evolutionary model is actually PART of the species evolutionary model.
Cool, eh?
However, 'white trash' (what ever their colour) tend to breed more than well educated people with a decent income. Whether coucil estate brats with criminal fathers would fare better in a neolithic environment than the son of a barrister is an interesting question... maybe Endemol should do their next reality project on exactly that?
greendawn
Yes, they do look alike - to us. But animals can tell each other apart even if we can't. Sheep (a spectaulary stupid animal) can tell bewteen herd members and non herd members when shown their photographs, for example.
carmel
so what is the "reproductive" rationale for two gay people to be "turned on" by each other?
There isn't one. It appears most likely genetic gayness is primarily on the X chomosome, so men having it is just a side working of whatever the bloody genes do elsewhere, not a survival characteristic in itself. Gayness caused by pre-natal hormonal exposure simply makes gender b act like gender a, so again, there's no reproductive rational.