Mathematical problems became spectator sports in 16th century, with generous prizes given to the winners. In such a competitive atmosphere, it's not surprising that mathematicians would jealously guard their knowledge - and in some cases, behave very badly.

Mathematical problems became spectator sports in 16th century, with generous prizes given to the winners. In such a competitive atmosphere, it's not surprising that mathematicians would jealously guard their knowledge - and in some cases, behave very badly.