As an inflatable limb, it can also operate delicately around meatbags -- just as the air pressure is increased for strength, it can be decreased when in close proximity to people so as not to injure them.

ENGADGET: iRobot's AIRarm prototype bot has an inflatable arm for manipulating objects, was built at DARPA's behest

You know, as anxious as we all are about our prospective (nay, inevitable) collective future as meatbags oppressed by some human-created supreme artificial intelligence, at least Isaac Asimov's (and to a lesser extent, Isaac Hayesimov's) Three Laws helped us sleep at night.

ENGADGET: Ugobe defines its own Three Laws, dooms us all to future of robot oppression