Instruct: Classify an Amazon review as either positive or negative.
Query: disappointing

I love Robert Sylverberg books, but this one did not made the cut. For starters how did these people know about stars and star maps if there was really no night at all. They had day light 24/7 with 4 Suns. We dont see any stars during the day with one sun alone, and they had 4 Suns! It does not make sence for an evolving civilization to experience day light nonstop, and for their people to know about star maps and astrology. When I read that It kind of blew off the story, what could have been an excellent work of science fiction was blown from the start.