This guy had a pretty natural reaction upon discovering that the DLR Hand Arm System has learned to use a hammer: he took a bat to the thing. Rather than curbing the inevitable robotic uprising, however, the whole thing just demonstrates exactly how durable the mechanical appendage is, as it resumes normal functionality after the swift blow. The arm contains 52 motors and super strong synthetic tendons, and is the work of the German Aerospace Center, the electronic sadists who also recently took a hammer to one of their robot hands. Videos of the mayhem after the jump -- we're sure they'll be
