Think fast – you're a physics genius
By Michael Strevens (Image: Quentin Bertoux/Agence VU/Camera Press) THE idiocy of humankind is a topic as entertaining as it is inexhaustible. Among our many inabilities, one of the most pathetic is our ineptitude in juggling probabilities. Suppose, for example, that you have an ordinary six-sided die with four green faces and two red ones. Your task is to choose one of the sequences below, then roll the die 20 times. If your selection turns up, you will win $25. Which one will maximise your chances of winning?