mirror was something that always confused me. I never got convinced that it shows things as they are

When I was a kid, mirror was something that always confused me. I never got convinced that it shows things as they are, I mean you can see it in mirror but I always thought that it's a gimmick. So I would stand still in front of mirror for hours, trying to see if I can catch it doing something wrong... Like I would try to capture small movements like closing of my eyes, or looking at right and left eyes, I mean things that required very little movement...even today, I enjoy looking at myself in the mirror. I don't...