Comment by xp84

> burger

I see what you did there

I agree, and when you boil it down, "keeping a log of what each customer orders, and doing math and statistics to guess what they'll do in the future"... that describes how every e-commerce operation functions, even going back 25 years. Of course there's a record of what you buy at the place you buy it from. The only reason there wasn't a long-term record like that in fast food in 1990 was that electronic storage was too expensive and paper storage just wouldn't be useful to do any later analysis on.