What people don't know about the flux capacitor is that when Doc Emmet Brown fell and struck his head on the rim of a toilet bowl and fell unconscious, when he regained conscious, he saw the words 'Flush Capacity' on the underside of his cistern.
Were it not for those helpful people who tell you how much of a flush capacity your toilet has, BTTF would never have happened.
by Thegreatnick July 2, 2006