I have linked a picture of 20 rectangles. Pick one, and I will tell you the one you likely picked. Read the description.

Some of you might know what I'm up to. If you do, don't spoil it for others. In the link below, is a picture with 20 numbered rectangles. What I want you to do is choose the one that you find the most visually pleasing--i.e. which rectangle you feel is the most satisfying to your eye, and which you find the most "perfect." Don't tell me what it is. Just tell me what you had in mind, and I will tell you the number of the rectangle. If you're like 90% of people, you probably picked a very particular rectangle, or one of the ones very similar to it. This isn't a mathematical trick... not really. Not in the same way as the guessing your number games. In fact, the only numbers here are the numbers on the rectangles to make for ease of reference. But there's a very amazing and elegant explanation to why 90% of people choose this particular rectangle. Here's the image: http://i.imgur.com/P7koQvg.jpg