As usual with us Homo sapiens, things got out of hand. These days, we’re racing more than ever: on foot; with bicycles, motorcycles, go-karts, tractors and heavy equipment; using cars, dog sleds and skis; and in powerboats, sailboats and airplanes. If it moves, runs, slides, floats, rolls or flies, there’s a race. Even some animal friends—dogs, horses, turtles—have learned they can earn approval, and treats, by racing against each other. It’s interesting that birds, the closest thing to airplanes, don’t race—nor do cats, who don’t give a damn about attention or treats…or much of anything.