His vision of technology is quite different from most SF, and on the surface seems quite fantastic, yet in fact feels the most realistic to me. His books have placed him in the extropian literary pantheon. Technology in much of SF is simply an effector of the vision of the work.
Social changes are often minimal.
Idealized nanotechnology also has potential for creating a singularity, although not as drastic as the one causable by control over the nature of intelligence. Much of his fiction is based on skirting around the Singularity and is quite interesting thereby. It is also well written. He was indeed married to Joan D. Vinge between 1972 and 1979. I'm trying to hoard him, myself.