Why do even well-educated people often understand so little about maths - or take a perverse pride in not being a 'numbers person'?In his now-classic book Innumeracy, John Allen Paulos answers questions such as: Why is following the stock market exactly like flipping a coin?How big is a trillion? How fast does human hair grow in mph? Can you calculate the chances that a party includes two people who have the same birthday?Paulos shows us that by arming yourself with some simple maths, you don't have to let numbers get the better of you.