This edition of the book in no way indicates that it's #3 in a 4 part series. Would've been nice to know.

Asimov's stories continue to strike me as excuses for him to explore a) his views of possible futures, and how robots/technology affect them, and b) logic puzzles. He does both of them VERY well, though.

My one nagging point is that all characters in his stories seem to be perfect logicians, who love nothing more than to diverge from an emotional conversation to argue the logical derivation of some mundane topic. I can understand interaction with robots proceeding this way, but it makes the people sound like robots.

Asimov's fascinating view of the future makes it worth overlooking this, though. Ideas like people living in closed cities getting agoraphobia when going outside make for a very interesting read, even if it is slow at times.