# The two curses of dimensionality

The muse of geometry has cast two curses on our computers. We have all felt the one Bellman wrote about, but the other stands there like Cassandra awaiting our use of statistical methods. The curse of dimensionality made its print appearance in Richard Bellman’s 1957 book Dynamic programming. It was an outcry over the impossibilities of dealing with functions of many variables when a million bytes of memory seemed beyond imagination.…