What was common about all the robot stories was that the interesting parts of them revolved around the failures of the three laws to accommodate every possible situation.
One story is about a robot that is accidentally brain damaged during construction, but it is adopted as a sort of disabled baby by its childless creator, rather than destroy what is otherwise a legally dangerous machine.
Many of the stories are about robots which cannot easily be told from human beings, And how they are discovered in their ruse.
