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For millions of years Humankind has been using a form of this via mate selection. What we are seeing now seems to me to be an extension of this tendency through technology, and I see technology as a form of evolution in the species. That said, I also find the elimination of "differences" in the species to be a shortsighted and possibly damaging decision by society as a whole.
We simply cannot know what we are eliminating from the genetic pool when we systematically destroy a population through manipulation of reproduction. I personally, would not go for in vitro testing....hell, I didn't even know the sex of three of my four children till they popped out.
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Holding onto anger is like grasping a hot coal with the intent of throwing it at someone else; you are the one who gets burned. - Buddha
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