> Plenty of people do. I do. What I mean is that "check your mirrors" and "look over your shoulder" are equally easy to follow. I didn't look over my shoulder

> Plenty of people do. I do. What I mean is that "check your mirrors" and "look over your shoulder" are equally easy to follow. I didn't look over my shoulder because I had checked my mirrors and was extremely confident there was no car in my blind spot. I still have a rule that I follow all the time.