HUMAN SENSES PROVIDE MUCH MORE INFORMATION THAN WE TYPICALLY USE: Humans Can Learn How to ‘Echolocate’ in Just 10 Weeks, Experiment Shows. Back when I was a sound engineer I could clap my hands and get a good idea of the size, shape, and “hardness” of a room, even in the dark. Probably couldn’t do it as well now without practice. And Richard Feynman used to have a party trick where he’d have someone take a book off a shelf, and identify which book it was by the smell on the shelf, and which person by the smell on their hands.