I enjoyed this book, but with many reservations. The book's nine chapters were originally serialized as short stories and even with the addition of a frame narrative it felt more like a collection of related stories than a standard novel. I enjoyed the puzzle-like quality of the various abnormal robot behaviors and the detective work that went into solving each case. However, I quickly lost patience with Powell and Donovan, the field team sent to solve the problems. Both of them are frustratingly stupid and shortsighted. As a duo they are no Watson and Holmes.