"After all, the fittest will survive....won't they?"

Evolution isn't survival of the fittest . . . it's survival of the best adapted to react to contingency. In terms of organisms, the generalists tend to be the ones that survive whatever environmental change places stress on an ecosystem.

"The suppression of ideas, even of incorrect ideas, is dangerous."

The challenging of them is not, and perhaps here we get a glimpse of the elephant. Is it OK to challenge ideas, even the most fundamental ones that might be a foundation so much is built on? This could be scientific or religious in nature.

Can we challenge everything and anything, or are some things inviolate? Is this where faith and science part company?