People are too sensitive. When I played basketball, people thought that a coach didn't like them if they yelled at them. However, a fate far worse would be if the coach gave up and didn't care enough about the person to yell at them. I personally enjoy it when people critique my reasoning, just so long as it's not some sort of signaling thing so that they feel dominant. I wholeheartedly endorse this idea. People cannot improve unless they get feedback.

This is also a useful heuristic when trying to pick a book on amazon. Read the negative reviews.