String theorists say that number could be 10 raised to the power of 500.

String theorists generally say that is why they need to keep working on it.

But string theorists admit they don't know how to do the same thing for time yet.

Some string theorists might say we should be glad it's not one in 10500.

Not everybody needs to be a string theorist or even to agree with it.

String theorists recognize the need to confront further major problems.

"The string theorists believe they can smell reality," he says.

Not everyone in the unification business is a string theorist.

String theorists did not know how to deal with the cosmological constant.

Enthusiastic pronouncements from the string theorists themselves are nothing new.