"I remember taking an anthropology class in college and the professor was explaining that there is little 'sexual dimorphism' in humans. He meant that there are few outward, observable differences between makes and females. At the time I was confused, so I raised my hand. 'I feel like it's very easy to tell men and women apart,' I said.'That's due to culture,' he answered."
Brandon Stanton is an American photographer, author, and blogger best known for creating the Humans of New York street-portrait and storytelling project.