I don't think that everyone working on x-risk should quit x-risk. I also don't think that no one should go into x-risk. Obviously, we need some people working on x-risk, even if it's only for value of information considerations.

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Still, if you are the only one who is doing something about existential risks, and is capable of reducing it a tiny bit, your work is very valuable.

How would you know if you're capable of reducing it a tiny bit?