This pile was made by dropping twelve thousand balls through a giant pachinko machine, with six thousand layers of pins. Its height reflects, as expected, the number of balls and the number of pins, but it also contains a factor of π. I do not know why π took a hand in this game, which should have been ruled only by the laws of chance. Perhaps it was attracted by the thought that, in a three-dimensional pachinko machine, the balls would have fallen in a circular pile?