Go to the textbook and jump over. The evolutionary advantage is always obtained not abstractly by the strongest, but by the most adapted, so that the REAL alpha beneficial for having a better offspring are those whose qualities provide it. Therefore, the healthy hairy macho with large, too big dwarfs once rested, leaving no offspring (since their form of communication with the female was the banal rape by a non-crocodile and the survival of these females also left to be desired), and our common grandfather became a chilly bald botan (according to the standards of his time, of course), who was able to invent a spear or an onion, not only for hunting, but also in defense from large dumb relatives very decent.