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.

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.

Looking ahead, we will compete with technology, but win with people. We will be people-led and tech-empowered.

I think what we've seen happen so far is that as we've applied technology for the picking process in the store, for example, is that job composition has changed but we have about the same number of people.

Technology is nothing. What's important is that you have a faith in people, that they're basically good and smart, and if you give them tools, they'll do wonderful things with them.

Until we're serving humanoid robots and they have the ability to spend money, we're serving people. We're going to put people in front of people.