Though robots are getting more and more involved in factory work and in a wide range of other types of jobs – including in the service industry and health care – their dexterity is not nearly as impressive. Since people first brought them to work in automotive factories more than 50 years ago, we have built robots that can weld, paint and assemble parts quite well. Today's best robotic hands can pick up familiar objects and move them to other places – such as taking products from warehouse bins and putting them in boxes.
But robots can't orient a hand tool properly – say, lining up a Phillips head screwdriver with the grooves on a screw, or aiming a hammer at a nail. And they definitely can't use two hands together in detailed ways, like replacing the batteries in a remote control.
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