An anonymous reader writes: IEEE Spectrum reports that German researchers, seeking to find out what would happen if a robot handling a sharp tool accidentally struck a human, set out to perform a series of cutting, stabbing, and puncturing tests. They used a robotic manipulator arm, fitted with various sharp tools (kitchen knife, scalpel, screwdriver) and performed striking tests at a block of silicone, a pig leg, and at one point, even the arm of a human volunteer. Volunteer, really?! The story includes video of the tests.