We're seeing a lot of major companies as well as startups coming up with smartwatches that replicate a lot of the functionality you might have in your smartphone. Will it be as big a market as smartphones? Probably not, but it still can be a very substantial market.

I don't know if anybody thought about how much impact the iPhone could have on society.

We need to get smarter about hardware and software innovation in order to get the most value from the emerging Internet of Things.

Chips will continue to shrink, of course. We, along with other semiconductor companies, are continuing to push toward the next goal of 10 nm, but going beyond 10 nm will require the development of new technologies, materials, and manufacturing processes that are still being perfected.

One of the technology lessons was to work inside the cost envelope of the developing world to lower costs overall. What's even more important and useful is dramatically lowering power consumption. Everyone wants batteries that can last 10 times longer.

Our idea with starting Stripe was to build better payments technology for people building things on the web.

It's much more likely that an asteroid will strike the Earth and annihilate life as we know it than AI will turn evil.

I will use my expertise in technology to bring the IRS up to date.