Have gotten darker:
Neal Stephenson has seen the future—and he doesn’t like it. Today’s science fiction, he argues, is fixated on nihilism and apocalyptic scenarios—think recent films such as The Road and TV series like "The Walking Dead." Gone are the hopeful visions prevalent in the mid-20th century. That’s a problem, says Stephenson, author of modern sci-fi classics such as Snow Crash. He fears that no one will be inspired to build the next great space vessel or find a way to completely end dependence on fossil fuels when our stories about the future promise a shattered world.