> I bring this up only because a lot of pro-nuclear arguments comes down to bold assertions from experts that certain things could never happen. Heinlein said

> I bring this up only because a lot of pro-nuclear arguments comes down to bold assertions from experts that certain things could never happen. Heinlein said (in Glory Road, I believe), that "Everything is theoretically impossible, until it is done. One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen." It seems to me that this is a double-edged sword -- not only can people accomplish things that experts claimed were "impossible," but things can happen that experts claim are "impossible." Most people are limited by our own views of the impossible and never change their views until proven wrong. Some never do change their views.