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Originally posted by salty pretzils
What I meant by doing better than nature is that we are doing somthing not occuring through nature (if that makes sense.)
It is through artificial means.
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It makes sense.
And back to your original point:
Selecting offspring to invest in is not at all new and it certainly isn't unique to humans. Other animals do this sort of thing all the time.
"I shall invest the most in offspring X because it seems to have the highest fecundity (reproductive expectancy). I shall invest the least in offspring Y as it is a weak little bugger and it would take a lot more investment to make them as strong and fit as offspring X."
That's what genes are doing all the time, they're making their survival machine put the most parental investment into the offspring with the highest fecundity.
The only difference between the above example and genetic screening of embryos is that, using genetic screening, a much lower amount has been invested in the offspring.