what wal-mart is behind the scenes anyway is one of the most innovative companies in america. it's this man who's doing the innovating. the head of wal-mart labs. now, his office in silicon valley look nothing like a wal-mart. in fact, the closest wal-mart retail store is 17 miles away, across the san francisco bay in oakland. but it's here where roger rahman thinks of the future of retailing, particularly online. now, he has his work cut out for him. wal-mart may be the biggest retailer in the real world, but amazon is the biggest retailer online. amazon's success thanks in large part to roger hman. he's a former amazon executive. his ideas are behind much of that company's success. rahman sold his latest company to wal-mart which is how he finds himself in the latest position. he's one of the earliest investors in facebook and had the opportunity to buy google. we could start in so many places, but let's start with the conflict or the competition between you and amazon. you were a key figure at amazon that helped amazon grow into what it is today. >> well, you know, it was a little bit of an exaggeration to say i was a key figure. >> it's al