Tons of white, a beautifully submerged Central Park, thick and light here, crystalized and dripping there, kids on sleds, their dads angling them just into position, just right, just here, okay, okay, now, “How do I steer this thing?” “Just pull on that rope, yeah, just like that. No, not like that, like this, see here? See, just pull like this. That’s all.”