Quite frankly, we can't judge our own competence very well without the wisdom of age and careful observation & contemplation. Even then, we can only judge our competence relative to others.
This is assuming we have a working, widely accepted definition for competence which we tend to gloss over and use only in specific contexts.
I also strongly disagree with "it is a a wise man who knows he knows nothing". A wise man knows what he doesn't know, but he certainly knows some things. He knows where to apply his own judgment and where to apply the thinking of others.
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Quite frankly, we can't judge our own competence very well without the wisdom of age and careful observation & contemplation. Even then, we can only judge our competence relative to others.
This is assuming we have a working, widely accepted definition for competence which we tend to gloss over and use only in specific contexts.
I also strongly disagree with "it is a a wise man who knows he knows nothing". A wise man knows what he doesn't know, but he certainly knows some things. He knows where to apply his own judgment and where to apply the thinking of others.
You're taking it too literally.