You thought they were stupid, but it turns out that flies take decision on their own terms. They have free will, io9’s Esther Inglis-Arkell reports: they “seemed to be making spontaneous motions which indicated that somewhere, inside their little fly brains, they were deciding how to move based on their own free will.”
https://gizmodo.com/the-crazy-device-that-shows-fruit-flies-have-free-will-1459261376
