Is that a bar fight? A Nascar race? An unusually aggressive pep rally? No — It’s Olympic curling! And there is screaming. So much screaming. Why? Well, it’s simply how teammates communicate with each other as they guide the stones, sweep by sweep, to the bulls-eye. But, for some, that's not immediately apparent: How do people understand curling? Like actually... What is it? Why are they screaming? Are those swiffers? Aren't they cold in tshirts? — Jennie McGowan (@jenniemac44) February 16, 2014 To understand the method behind the mayhem, one must first know the rules of curling. For starters, players...