When I was 8, I mixed lighter fluid with liquid soap and spread it on the street in front of my house. My friend Peter and I watched with nervous excitement as my block ignited into ribbons of red, yellow, and blue. I mistook the confused shouts and panicked expressions of the neighbors for the same joyous exuberance that the two of us shared. In the end, no people or lawns came to any harm, but I received strong admonitions, and my parents, a few letters from the neighbors.