Yes, but be careful with this line of thought - it is a result of a person being aware that there are known-unknowns. That is why they avoid using concrete terms, because they know that they are ignorant about many things. But there are still things which this person will be unaware that they don't know.
I have always felt that Richard Feynmann's greatness devolved largely from the fact that he was better at identifying things that he didn't know than his colleagues. Where one person might develop a theory that works to explain a particular phenomenon, Feynmann would understand that this answer would just reveal new questions, so he would dig further than others.
I have always felt that Richard Feynmann's greatness devolved largely from the fact that he was better at identifying things that he didn't know than his colleagues. Where one person might develop a theory that works to explain a particular phenomenon, Feynmann would understand that this answer would just reveal new questions, so he would dig further than others.