Great Understatements in Physics

From Cosmic Log:

Hawking and Mlodinow may make it sound as if M-theory has to be the theory of everything, but Krauss says it's too early to declare "M-Mission Accomplished." One big issue is that M-theory makes more than one prediction about the nature of the universe. In fact, the number of predictions it makes is somewhere around 10 to the 500th power. That's a 1 followed by 500 zeroes.

"On the surface, that sounds like a bad thing," Krauss said.