I agree -- you really only need Galileo as an example of this. G: "I can prove the world is round!" Everyone at the time: "Liar! Heretic!" Later people: "Hmm

I agree -- you really only need Galileo as an example of this. G: "I can prove the world is round!" Everyone at the time: "Liar! Heretic!" Later people: "Hmm. Galileo was right. The world IS round! In fact, it's an oblate spheroid..." Sadly people are often easily lead. All it really takes is one person in good standing in a group to shout "Liar!" and suddenly the whole group is doubting the truth of what's being said.