Reply #21: the reason why some people still call it a theory

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For one thing, my college biology text referred to it as a theory.

Secondly, it's not farfetched to believe that there may be evidence one day that shows that monkeys didn't exactly evolve into human (don't overanalyze this sentence, i'm sure you get my point). Sure, evolution on the small scale has been proven, but evidence of large scale speciation (molecule to an intelligent human being) is not completely solid.