When a sport is partly about the technology being used, a technology arms race is not necessarily a bad thing. The America's Cup is of interest as much for the engineering of the yachts as for the skill of the sailors. The same is true of Formula One auto racing and, to a lesser extent, the Tour de France cycling race. The technology arms races in these sports are arguably virtuous. But when, as in swimming, the arms race leads to the pursuit of a new technology that does not contribute to the sport and leaves everyone worse off, the arms race is vicious.