Marc Stiegler wrote a short story for Analog Magazine in 1989 called “The Gentle Seduction” that is a hopeful take on the Singularity. It reminded me of a much older short story by Isaac Asimov, “The Last Question”. Both are thought provoking.
Tor.com gets at the philosophical core of “Total Recall” in ‘”If I’m Not Me, Then Who The Hell Am I?”: Total Recall’. I need to get around to reading some of Philip K. Dick’s stories.