Sand wrote:
But the conscious weeding out of what is assumed to be irrelevant factors has a reasonable chance of destroying valuable unknowns...
As I said before, human societies have been participating in a form of eugenics for thousands of years at the least. Certain modern religions prevent individuals marrying outside the faith, and as you or that ruveyn chap pointed out, many thousands of years ago Spartans cast their sub-standard offspring from a cliff to their death. Clearly none of that has prevented us expanding our population exponentially, sending men to the moon, or splitting the atom.