A lot of the insecurity you mention is known as "impostor syndrome": http://en.wikipedia.org/wiki/Impostor_syndrome http://en.wikipedia.org/wiki/Impostor_syndro

A lot of the insecurity you mention is known as "impostor syndrome": http://en.wikipedia.org/wiki/Impostor_syndrome http://en.wikipedia.org/wiki/Impostor_syndrome Basically, you know enough to see the gaps in your own knowledge, but you can't so easily see the gaps in others' knowledge.