 Often the protagonists from one work belong to a group that is regarded with suspicion or enmity by the protagonists of another work.While a great deal of science fiction reflects either very optimistic or dystopian visions of the human future, Reynolds's future worlds are notable in that human societies have not departed to either positive or negative extremes, but instead are similar to those of today in terms of moral ambiguity and a mixture of cruelty and decency, corruption and opportunity, despite their technology being dramatically advanced.The "Revelation Space" series includes six novels, seven novellas, and six short stories set over a span of several centuries, spanning approximately CE 2205 to 40 000, although the novels are all set in a 300-year period spanning from CE 2427 to 2727.