h a l f b a k e r y
This is what happens when one confuses "random" with "profound."
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1. The caloric content of each purchased item is known. The program would figure out total calories purchased and calculate what component of the food pyramid each purchase represents, with its % of intake by calories. The program would show an idealized pyramid then draw your pyramid, tottering and
topheavy with your family-size scrapple and velveeta purchases. Consumers would buy more high priced fruits and vegetables so as to avoid the shame of a lard-laden sugary and asymmetric pyramid. Maybe it would help people make healthy eating choices, if such a thing exists.
2. One could put competitor's grocery store receipts into a reader. The text is standardized and should not be too tough to decipher. The program would then show what the customer would have paid if he or she had bought the same items at your store. This service might be offered out of the back of a van in your competitor's parking lot, and you could hand out coupons too.