
In Daedalus, or Science and the Future, Haldane said there were really only four fundamental biological innovations of prehistory: 1) Domestication of animals; 2) Domestication of plants; 3) The use of fungi for the production of alcohol; 4) The invention of frontal copulation which "altered the path of sexual selection, focussed the attention of man as a lover upon woman’s face and breasts, and changed our idea of beauty from the steatapygous Hottentot to the modem European, from the Venus of Brassempouy to the Venus of Milo."[p.49]