[qzrrbz]

OK -- time to ask the obligatory engineering question! How the heck was he *controlling* that thing??? :-)

He had a series of objects strung across his back (one would think battery and cRio :-) ), but where are the fine motor control input devices? And for a double version of this arm, wow... How is the wearer to control that?

That, to me, was the neatest part of the interview! The "how the ... is he doing this" part!