Arrogance

 As someone said, “Arrogance is ignorance plus conviction.”  You don’t know what you don’t know.  It is not that you know nothing about a field or work or situation.  It is that you do know something, you learn a few things, but then you think you know more that you really do.  And when the situation gets more complicated, instead of assessing that you are in need of more learning, practice, experience, you simply say, based on past beginner’s knowledge, that you know all you need to know.  You are ignorant but convinced that you know.  If you go to an emergency room beware of interns who have had but a few months of experience.  And bloggers who lack humility.