You have again failed to offer an alternative. If you are incapable of it, then eugenics was the right word to use, regardless of your sensibilities. It was no

You have again failed to offer an alternative. If you are incapable of it, then eugenics was the right word to use, regardless of your sensibilities. It was not my intention to offend, but to accurately identify. If you have a better word for it, I would certainly like to hear it. Again: What word would you use to describe the theory that selective pressures that decimate a population will eventually result in a superior specimen?