You carry a phone. It knows where you are. There's so much more information about you, and that's an important thing, and it makes sense why people are asking difficult questions.

So I guess I'm just very worried that with Internet privacy, we're doing the same thing we're doing with medical records, is we're throwing out the baby with the bathwater, and we're not really thinking about the tremendous good that can come from people sharing information with the right people in the right ways.

Our mission is to organize the world's information. Clearly, the more information we have when we do a search, the better it's going to work.

So I care what people think, and I like people, and I like employing people and I like creating opportunity for people so I'm pro-people and I want the technology to help us serve people. Of course, we want machines to do what machines are best at, you must and you want to, and at the same time, we should consider the importance of being purpose-driven.

There are all these things that add up into this business that's Walmart that keeps it really interesting. At the root of it all, though, it's a people business and it's a merchandising business. Today, it's increasingly a technology business. The supply chain is critical, of course, and real estate still plays a key role.

The sales floor probably gets more people. And what we're seeing in supply chain is that it's basically the same number of people with just a whole lot more productivity, but their jobs change.