Is beauty based on a natural law?
If you look at a conch shell, the Fibonacci sequence -- the golden ratio -- defines how the conch spirals around. It defines how your face is oriented, even your digits in your fingers. The digit that's right next to your knuckle is 1.6 times as long as the next part of your finger, and then that part of your finger is 1.6 times as long as the very tip of your finger. So we see it over and over again, in growing organisms.