[IronMonk]

the reason that dualracial [racist term] people are generally more attractive and heltier is that their parents had less genetic material in common, thus less insest. believe it or not, there is no way for the world to work unless there was a ton of insest in your famly tree. but in other world the way for you to give birth to the healthiest children is to mate with someone that is very very very differant then you. not your cousin.

and seeding is a very logical argument to our being here. although not by having aliens drop off a dozen humans on a planet. but that by perhaps a metior containing plant seeds.