According to author Christopher Ryan, an idea permeates our modern view of relationships: that men and women have always paired off in sexually exclusive relationships. Before the dawn of agriculture, however, humans appear to have been quite promiscuous. Check out the infographic below with the controversial arguments, and the original TED Talk in which Ryan walks us through evidence that human beings are sexual omnivores by nature, in hopes that a more nuanced understanding may put an end to discrimination, shame and the kind of unrealistic expectations that kill relationships. (We wonder what his wife has to say about that.)
