Robots are already a fixture in manufacturing, and computers do some jobs better than people. So what happens to the future of employment, especially if people live so long they won't retire until they're 100 years old?
"If most goods and food can be produced with few or a modest percentage of people involved, then the focus shifts to services," said Glen Heimstra, a consultant and founder of Futurist.com. He noted that a lot of service jobs involve interacting with real people, and that's not likely to change.
Entertainment will be another key area for work. "Think of all the words being written right now on the Web, all the images being uploaded, all the videos being produced, by both professionals and amateurs. It seems a safe prediction that this will increase."
And how about the idea of a guaranteed income in order to keep the capitalistic machine running? It isn't as far-fetched as it sounds: Alaska gives a payment to every citizen that comes from oil revenues. This rather rosy scenario depends on human civilization getting past one huge bottleneck: energy.