[I]f we have nothing but confidence in calling darts a sport, then it's with reason. Things are sport because enough people choose to call them sport - to think of them that way and discuss them as such. To that extent, calling darts a sport is a self-fulfilling prophecy.
In any case, the traditional objections melt away. “But you don't even have to be fit,” people say. Not in the conventional sense, no. And I'll go farther: you can even be fat. But you don't have to be fit to play golf, either, and no one ever says that Lee Westwood isn't svelte enough to be a sportsman.
Read more in The Times Online.