One of the generalities that has been true about the retailing of food is that, for the most part, the nature of what's being sold in supermarkets -- the food itself -- remains more or less the same for long periods of time. But now it looks as though that could change. There are at least a couple of forces gathering that could work to fundamentally change the basic constitution of food products being offered at retail.
Let's step back for a moment. In broad terms, here's how the reta