Anywhere from 200 to a 1000 years from now natural selection will come to a halt for humans. Ironically intelligent design will replace it. If that isn't funny then I don't know what is. Sure there will still be random procreation but all mutations and defective genes will be eliminated and replaced. And enhanced genes will be introduced. There being only so much we can imagine it seems quite logical that we will still rely on nature to surprise us with novelty and take from it only that which we find useful. I imagine it would be quite likely that in the future that when we are able to travel to other planets we will terraform some and introduce life there only to let it develop like a wild garden. We will even likely create a primate species similar to ourselves to see what evolution produces in them. This is more than mere speculation, I just can't see it not happening. But I have to wonder thinking about all the alien abduction stories, if some are true, could earth not be a wild genetic garden for aliens?
Speaking of aliens and alien life, what would impress me most about space travel is not meeting another intelligent species. It would be seeing all the diverse ecosystems on other planets. It boggles the mind to think of all the creatures, plants, and life forms we can't imagine that must exist now. Quite probably, right this very instant, on some planet, there exists huge dinosaur like creatures. If that isn't an awesome thought I don't know what is.
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