Today we’ve become so aware of the downsides of innovations, and so disappointed with the promises of past utopias, that we find it hard to believe even in a mild protopian future—one in which tomorrow will be a little better than today. We find it very difficult to imagine any kind of future at all that we desire. Can you name a single science fiction future on this planet that is both plausible and desirable? (Star Trek doesn’t count; it’s in space.)