the "Drawing on the Right Side of the Brain" lady, shows these two tables

And to prove it, she says, "The exact size and shape of these tabletops is the same, and I'm going to prove it to you." She does this with cardboard, but since I have an expensive computer here I'll just rotate this little guy around and ... Now having seen that -- and I've seen it hundreds of times, because I use this in every talk I give -- I still can't see that they're the same size and shape, and I doubt that you can either. So what do artists do? Well, what artists do is to measure. They measure very, very carefully. And if you measure very, very carefully with a stiff arm and a straight edge, you'll see that those two shapes are xactly the same size. And the Talmud saw this a long time ago, saying, "We see things not as they are, but as we are." I certainly would like to know what happened to the person who had that insight back then,