My favorite example of a single level bubble sort is organizing a deck of cards. One at a time, a card is compared with its neighbor until all are in order. A much faster method is to first separate the cards into suits and then order them. This is a two level bubble sort.

A college job was to organize purchase orders and invoices for a department that never organized anything. I first sorted by year, then month and finally by day. A three level bubble sort with alpha and beta decision tree cutting.

Professional bread making is done by weight, not size. Indeed, it is traditionally sold that way as well. Not a good lawsuit. On the other hand, there is a large chain that has a corporate policy to short beer pints by 2 oz. Any class action lawyers want in on the suit?

What he said. I was going to make this point and now do not have to.

No, you cannot! This touches a nerve not because it is a sandwich but because it is an iconic company willing to cheapen its flagship product.