With the technology advances that are presently on the horizon, not only low-skilled jobs are at risk; so are the jobs of knowledge workers. Too much is happening too fast. It will shake up entire industries and eliminate professions. Some new jobs will surely be created, but they will be few. And we won’t be able to retrain the people who lose their jobs, because, as I said to Andreessen, you can train an Andreessen to drive a cab, but you can’t retrain a laid-off cab driver to become an Andreessen. The jobs that will be created will require very specialized skills and higher levels of education — which most people don’t have.