Apparently intelligent behavior from the head of a toothbrush
Ig Nobel Physics Prize winner Mahadevan and his colleagues have demonstrated how to produce seemingly intelligent behavior with the head of a toothbrush. The Physics arXiv blog summarizes the study, in a few words:
Toothbrushes, BristleBots, and the Nature of Intelligence: Fix a vibrating motor to the head of a toothbrush and you have an automaton that can demonstrate surprisingly complex behaviour, say Harvard physicists.