Curling is a deceptively tricky game. Every four years, it grabs the public attention as a quirky Winter Olympic sport, much less flashy than figure skating and far less accessible than ice hockey, the kind of sport that makes viewers go, “Ah, I could probably do that if I tried.” And from a seat on the couch, it does seem like it would be easy— slide a rock with a big plastic handle down the ice, try and sweep it onto an icy-dart board. In some ways, it really is that straight-forward, in the same way bowling is straight-forward. You throw the ball and hope to knock down some pins. “I can tea…