While I appreciate what you are saying, I think the type of risk pg was talking about was the risk of wasting his time/career, not the risk to his life. The mor

While I appreciate what you are saying, I think the type of risk pg was talking about was the risk of wasting his time/career, not the risk to his life. The more I think about it, I think a good modern example may turn out to be someone studying AI (specifically AGI). If it turns out to be possible, and you succeed, it would be huge. If it turns out to be not possible, you would have wasted your career. So maybe the lesson is to do more than one thing.