Contrary to what he thinks, I do believe I have improved since I began, albeit not to the level he wanted. The "should know X by now" quote has bothered me, tho

Contrary to what he thinks, I do believe I have improved since I began, albeit not to the level he wanted. The "should know X by now" quote has bothered me, though, where I have asked myself his question in my own head. For the most part he seems okay around others, but there have been a few times where I think people have picked up on his attitude.