“I built a vending machine and I stuck it in the middle of San Francisco. And you walk up to this vending machine and you put a dollar in and $100 bill comes out. And that's the product. That would have insane demand. There would be a line at that vending machine. I think people would be extremely satisfied. They'd be like, "This is awesome." The retention would be very good. I'm sure they would come back tomorrow. But the whole thing is it's ridiculous. The whole metaphor is ridiculous because it's just not viable to do something like that.”