Whenever I go to the mall nearest my home, I usually use the same entrance. I seem to have an easier time finding a parking space nearby, and it takes me into a central area of the mall, making it easier to get to get to other parts of the mall.

But when you go in through that entrance, you have to walk through the food court where there are all kinds of places to tempt you to go off your diet. It is there that I witness on of the most simple and time-tested marketing strategies known...