I agree. But I'd also say that it requires a bit of domain knowledge to know what you don't know. That is to say: I know what I don't know in the fields that I

I agree. But I'd also say that it requires a bit of domain knowledge to know what you don't know. That is to say: I know what I don't know in the fields that I study/practice in. I don't know what I don't know about the fields I don't.