He motions at the guy who's holding her plank. The guy turns out to be fairly hip, because he just throws the plank. It lands at an odd angle on the floor between them. But the spokes have long ago seen the floor coming, calculated all the angles, extended and flexed themselves like the legs and feet of a basketball player coming back to earth from a monster dunk. The plank lands on its feet, banks this way, then that, as it regains its balance, then steers itself right up to Y.T. and stops beside her.