New Soviet Man was not darwinian evolution (variation followed by selection) it was Lamarkian (characteristics derived from exposture to the correct environment).
Man will make it his purpose to master his own feelings, to raise his instincts to the heights of consciousness, to make them transparent, to extend the wires of his will into hidden recesses, and thereby to raise himself to a new plane, to create a higher social biologic type, or, if you please, a superman.