Aggressive spiders may be more successful than docile ones in the wild, but the study you reported on really tells us nothing about humans (TNT, 5-13). Spiders don’t know how to divide labor, and can’t cooperate on projects as humans do.
Long experience teaches man that cooperative action is more efficient and productive than the isolated action of self-sufficient individual humans.
David Ricardo’s law of comparative advantage explained two hundred years ago how division of labor, cooperation and trade advantage all sides even where one person is better at doing everything than another. This explains why a surgeon hires an …