Humans and ants are both highly social organisms, so I think it just points to some broader evolutionary advantage inherent in that form of biological organization. Ants also domesticate livestock (aphids) and “farm” fungus for food. They have specialized jobs, such as warriors and office clerks (there are ants that are in charge of organizing and storing crap that other ants bring into the colony). It is important to note—not that you would ever posit this, EP—that just because evolution selects for something, it doesn’t mean that something is moral. Just pointing that out for all those libertarians and Republicans out there who think natural selection is a moral ideal for running an economy.