One time, when I was a kid, my brother, Spencer, and I went over to our neighbor, Matt's house. He was called Matty then. Or Mr Matty-Mo. Matty got out a roll of aluminum foil, and tore off strips an inch wide for each of us. We folded the aluminum foil in half, then in half again, and so on, and we tried to see who could compact their aluminum foil into the smallest ball. Eventually, we were chomping down on the foil with our teeth. When we realized that it was physically impossible to further compact the aluminum foil, we shrugged and went on to the next thing, making paper airplanes or pretending that the floor is lava.