People are starving in the world, not because we don't have enough food, but because we're not organized. And computers are part of that.

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.

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.

I think most Americans probably don't know what a tech makes that helps take care of our stores and clubs and that we can help them learn how to be a tech. The same thing's true for our drivers. So we have a need to get the word out so that people know there are some great jobs.

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.