Here's another familiar object and of course it works like this. But because I'm left-handed, I can use something rather different. I can use this left-handed cook screw, which works like this. Now let's look at that in a mirror. What you see in the mirror looks like a normal right-handed person using a normal right-handed cook screw. So this was a situation in which the mirror image was really quite familiar and the reality was rather unusual. So let's look at that.