A bicycle is a Truly Great Invention because it is part of the entire range of human existence, from frivolity to necessity. A bicycle, if understood correctly and used to its full potential, is actually a key to a completely different, and in many ways more rewarding, way of life. Sure, there are limits to the ways in which you can use a bicycle, but those limits are surprisingly few. A bicycle can give you the feeling of freedom and speed you get from riding a motorcycle, the sense of well-being and peace you get from meditating, the health benefits you get from an afternoon in the gym, the sense of self-expression you get from learning to play guitar, and the feeling of victory you get from completing a marathon. It’s an invention that was in many ways ahead of its time, and whose time has finally come.