Promiscuous fathers will have to compete with their sons for mates, so it wouldn't benefit them if their sons were to produce lots of pheromones.

Promotional retailing is not new. But the relentless pursuit of promiscuous shoppers by traditional and digitally-native vertical brands is making much of retail increasingly unprofitable.

If promiscuity was indeed so undesirable, though, you would expect that promiscuous people—and women in particular—would be socially ostracized, left with no friends, bullied, and lonely ...