Fallibilism is one of the most important modern ideas. By fallibilism I mean the idea that no idea is in principle immune to revision. It is among the most important methodological principles for natural science. As Ann Druyan said, science “is forever whispering in our ears, ‘Remember, you’re very new at this. You might be mistaken. You’ve been wrong before.’” Many of the claims a Newtonian physicist would once have confidently made, have been shown to be false by Einsteinian and quantum physicists.

As it turns out, this crucial idea has important roots in Muslim thinkers who might reasonably be called fundamentalist.