"Okay," Cotton finally said, "I see the problem." His hand relaxed. On 
the mediatron, the subassembly drifted away from the main group under its own 
momentum, then slowed, stopped, and began to fall back toward it, drawn in by 
weak van der Waals forces. Cotton's right hand was resting on a small 
chordboard; he whacked a key that froze the simulation, then, as Hackworth 
noted approvingly, groped the keys for a
few seconds, typing in some documentation. Meanwhile he was withdrawing his 
left hand from the glove and using it to pull the rig off his head; its straps 
and pads left neat indentations in the nap of his hair.