I see three forces militating in favor of growing inequality: increasing measurement of worker value added, automation through smart software, and globalization.

Look at electricity in human history - it took a few decades for electricity to really revolutionize the American economy. And the Internet will be the same. At some point in the future, we will arrive at a new era of low-hanging fruit.

When you look at the actual data on technological innovation, one thing you see is that what I call the 'low-hanging fruit' has been exhausted. So radio, flush toilets, electricity, and automobiles - a lot of very basic inventions - have spread to almost all households.

The iPhone is made on a global scale, and it blends computers, the Internet, communications, and artificial intelligence in one blockbuster, game-changing innovation. It reflects so many of the things that our contemporary world is good at - indeed, great at.

Social media should be more like a cocktail party than anything else. You can have your fun jokes, and you can also express yourself and your beliefs. It's a conversation, not a sledgehammer.

While the digital age has done so much to improve our world, it has dramatically changed our social structure, often further isolating us from each other.

Kids are so accustomed to technology that it's upsetting to watch them without their phones. They don't know what to do. Sometimes I feel like I'm like that, too - if I get my phone taken away because I'm grounded, I don't know what to do. So I just have to sit in my room and stare blankly at the ceiling.

This would only come if you have a revolutionary change in technology like the jet brought about.