I think scale matters, and being an Aggregator creates lots of opportunity, but scale also has a lot of disadvantages and it's an imperfect concept.

There's only so much we can do from the home office [Walmart headquarter] to merchandise a store well. If you live in that community and work in that store, you know more about what you should be featuring and the actionality on an end cap than someone from Bentonville, Arkansas does.

Today, we still have more than 300,000 U.S. associates who were with us since 2015 and are now leading teams, running stores and clubs, and continuing to grow their careers. Their stories are a reminder that when people are given opportunity, they make the most of it - and a culture of opportunity creates a cycle where happy associates lead to happy customers and members, and vice versa.

I think that people that shop Walmart frequently and love the brand the most find it very natural to come to us first for e-commerce. But for others that may shop around or not have chosen to shop at Walmart in the past, you get what you earn, and our opportunity to earn their business starts with winning their grocery and consumables basket.

Volunteer for something extra, volunteer for something hard. One of the reasons that I got the opportunities that I got was that I would raise my hand when my boss was out of town and he or she was visiting stores or something, and someone needed to pinch hit and go to a meeting, I would go, and if I knew the answer to the question that came up, I'd share it, if I didn't, I'd say, "I don't know, but I'll find out fast and get back to you." I then put myself in an environment where I became a low risk promotion because people had already seen me do the job.

One way to think about Walmart is a very large river of merchandise, moving from raw material to a customer and anytime that river of merchandise has imperfections, we either have an out of stock or we have some sort of overstock that creates additional costs, labor markdowns, accidents, damages.