I don't see how those novels could have been an inspiration?
They present a seriously posthuman future, with a populace consisting mostly of human uploads and digital substrate native people, as a normal setting. Basically, hardcore computationalist cogsci, computer science mediated total upheaval of the human condition, and observing how life goes on nevertheless instead of bemoaning the awfulness of losing some wetware substrate. Several short stories of non-shallow thought about issues with human uploads and human cognitive modification. Pretty much the same cultural milieu as the SIAI writings are based on.
The ideas about singularity and AI come from Vinge, but I have a hard time coming up with other writers before 2000 that take the same unflinching materialistic stance to human cognition that Egan does, and aren't saddled by blatantly obvious breaks from reality. Ken MacLeod's Fall Revolution series maybe.
Basically Egan showed how the place where SIAI wants to go can be inhabitable.
The ideas about singularity and AI come from Vinge, but I have a hard time coming up with other writers before 2000 that take the same unflinching materialistic stance to human cognition that Egan does, and aren't saddled by blatantly obvious breaks from reality.
Egan's stance is not materialistic in the least. It can be best described as a "what if" of extreme idealism. It has computers without any substrate, as well as universes operating on pure mathematics. You can hardly find a way of being less materialistic than that.
The idea of singular...
From a review of Greg Egan's new book, Zendegi:
(Original pointer via Kobayashi; Risto Saarelma found the review. I thought this was worthy of a separate thread.)