re: People that get mad at you when you point out and correct their mistakes... Wtf

I work a side job doing pre-employment screening for a manufacturer. One of the things we do is give them a fair sized dose of constructive criticism during the screening process - for no other reason than to see how they will react to it.

In my regular job, when conducting interviews, someone in the interview group will always find something the person said or something on their resume that could have been done differently and bring that up. Again, for no other reason than to see how they react.