Asimov writes with something of a clinical dryness, but usually still manages to be interesting. This book is a series of nine sketches about living with robots who are smarter than mankind but have been programed never to harm humans. Various situations occur where this causes conflicting tendencies that lead to problems. Some are more interesting than others. It's been said that nothing goes out of date faster than visions of the future. I enjoyed this book primarily because it was written in 1950 and was (in a way) a prediction of what the world would be like now — and not a very accurate one.