Diaspora starts about a thousand years from now. Most of human civilisation has moved inside computers; essentially, a major branch of our descendants consists of conscious software.

He specialises in hard science fiction stories with mathematical and quantum ontology themes including the nature of consciousness. Egan's short stories have been publiGreg Egand in a variety of genre magazines including regular appearances in Interzone and Asimov's Science Fiction. Egan does not attend science fiction conventions does not sign books and appears in no photographs on the Web though both SF fan sites and Google Search have at times mistakenly represented photos of other people with the same name as being of the writer.