One of the hazards of science is letting your test subject become over-confident in her abilities to surmount challenge. This often leads to critical failures in testing procedures and potato-related injuries. Conversely, it is much less entertaining to watch a despondent test-taker fall from a high platform or incinerate herself in a testing-laser. It is important to keep your victim -- I mean, subject -- at the proper disposition, to ensure that your science is both fun, and useful! And remember to always dispose of your failed experiments in the proper cremation receptacles! For science!