As Hugh Hefner: Playboy, Activist and Rebel was set to hit the screens, Hefner told Reuters that he doesn’t believe the social consciousness of Playboy has been entirely ignored, but, as Ray Bradbury once said, “People don’t see the forest because of the T’s.”

The magazine often served as a platform for Hefner to back issues he believes in: civil rights, gay causes and the legalization of marijuana. “I would like to be remembered as somebody who had some positive impact on the changing of the social-sexual values of my time. I’m pretty secure in that, I think,” Hefner said.

With three (current) girlfriends, Hefner might agree with the writers of the new book Sex at Dawn: The Prehistoric Origins of Modern Sexuality, a chronicle of sexuality during early human development, that we the people once thrived as swingers—and we don’t mean from trees.

The book states that in “primal hordes,” a.k.a., humanity as it existed before the advent of agriculture, people shared everything—including sex. Human bodies also offer clues to the “urgently, creatively and constantly sexual” homo sapiens. Women’s capacity for multiple orgasms and men sporting the largest penises in the primate order also point toward our promiscuous heritage.

Paying tribute to another facet of our promiscuous heritage is a new Off-Broadway musical The Deep Throat Sex Scandal, scheduled to debut in October. Penned by playwright David Bertolino, the plucked-from-true-life plot about a Bronx hairdresser who made “a little movie” that reportedly “ignited the sexual revolution,” takes us back to the prehistoric days before cable, the Internet and even—gasp—VHS. Talk about evolution!