Sex Sells. Here's Why We Buy - TIME

Sex Sells. Here's Why We Buy - TIME: "Both depended on the same insight: individuals work hard mostly because they want to show off to others, not for the good of the group. This tendency holds true in both organic evolution and human economics ... We've known since Darwin that animals are basically machines for survival and reproduction; now we also know that animals achieve much of their survival and reproductive success through self-advertisement, self-marketing and self-promotion"