There are lots of examples of routine, middle-skilled jobs that involve relatively structured tasks, and those are the jobs that are being eliminated the fastest. Those kinds of jobs are easier for our friends in the artificial intelligence community to design robots to handle them. They could be software robots; they could be physical robots.

The kind of job where you have to hustle and hustle and where you're not sure whether you will have enough clients next month, where you have less job security, is becoming much more common.

Electricity is an example of a general purpose technology, like the steam engine before it. General purpose technologies drive most economic growth, because they unleash cascades of complementary innovations, like lightbulbs and, yes, factory redesign.

G.D.P. is not a measure of how much value is produced for consumers. Everybody should recognize that G.D.P. is not a welfare metric.

On the Internet, inside information is currency, and there will always be counterfeiters among us.

There is no casting director; there is no producer monitoring your upload button. Anyone that looks like anyone can upload a video. I think YouTube and the digital space does set a really good example for the rest of the industry in that sense.

We have been talking with leaders: Change is coming; you can no longer have a closed regime with an open society - satellites, social media, the Internet - you have this kind, this kind of society moving forward, and you are running this closed regime; this is not sustainable. This cannot continue.

Twitter is the most impulsive form of social media, but it's still the most celebrated among politicians and pundits within the Beltway, which is curious, since it can destroy any sense of privacy.