Fascinating. Vinge is about the furthest from “soft” sci-fi I can think of. We must have very different definitions of what makes something soft.

It’s certainly true that Vinge doesn’t spend much time on the engineering details, but I find him unusually clear on “imagine if we had this kind of impossible-now technology, but the rest of what we know about physics remained, how would people behave?”

He was, after all, a physics professor.

Rainbow’s End is much clearer on this than his distant future stuff, of course.

A friend of mine and I both read it about the same time and discussed it afterwards. I thought it was pretty good, he thought it was not that great. What we agreed on was that in spite of there being many fantastic aspects to the book, on the whole it failed to be an awesome novel.

Definitely worth giving it a try if you're a programmer, just for the fact that it's written by another programmer: the opening scene where they find a bunch of rules written down and just follow them reminds me of ACPI; the discussion of public-key cryptography and shipping drives full of one-time-pad around the galaxy; the "compression scheme" with the video.

The softness is deceptive. Hard concepts about communication and different types of brains are essential to the plot.

It uses technological differences as key plot and setting components not just space as sea, so it is sci fi but it is improbable in many ways so yea “soft” sci fi or more speculative fiction