So, for me, working with larger companies has often been very satisfying, precisely because of the ability of bringing critical mass to bear on a given effort.

Henry Kissinger once told me he was very concerned about the Internet's impact on people's ability to absorb information in a concentrated way, because we've become accustomed to looking up something, getting a snippet and being satisfied with that - as opposed to reading through and considering a weighty tome that goes into great depth.

Although I've had several major career changes, I was extremely hesitant about making some of them.

There is a project that's underway called the interplanetary Internet. It's in operation between Earth and Mars. It's operating on the International Space Station. It's part of the spacecraft that's in orbit around the Sun that's rendezvoused with two planets.

I'm done. Done with social media. Done.

Information technology is at the core of how you do your business and how your business model itself evolves.

One thing we see a lot is this - the idea kids have now that they don't have to go to college. They don't have to get a real job. They feel they can become 'Internet famous' by taking selfies. They think they can become a star through social media. We see that a lot. You can succeed. But it takes time and persistence.

We need to start training more primary health providers and fewer specialists. We will never be able to control health care costs unless we challenge the over-emphasis on medical research, specialists and technology and put more emphasis on delivering good, everyday basic medicine to those who now have none.