We've all been there. You pick up a slice of pizza and you're about to take a bite, but it flops over and dangles limply from your fingers instead. The crust isn't stiff enough to support the weight of the slice. Maybe you should have gone for fewer toppings? No. There's no need to despair.
There's a legend in the mathematics community, about how a gifted youngster figured out a problem so brilliantly that his teacher allowed him to study on his own. We'll tell you about the prodigy, and the story, and see if you can guess his methods.