What important truth do very few people agree with you on?

This a question Peter Thiel likes to ask in interviews.

This question sounds easy because it’s straightforward. Actually, it’s very hard to answer. It’s intellectually difficult because the knowledge that everyone is taught in school is by definition agreed upon. And it’s psychologically difficult because anyone trying to answer must say something she knows to be unpopular. Brilliant thinking is rare, but courage is in even shorter supply than genius.

It's a contrarian question that requires deeper thinking and courage to answer.

What important truth do very few people agree with you on?
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