A brief moment in a supermarket made me realize that the real problem was never the food. A woman was about to carry the last bag of rice from the shelf. At that same moment, an elderly man stretched out his hand for the same bag. For a few seconds, both of them stood still. The supermarket was brightly lit. Children were moving around with their parents. The cashiers were attending to customers. Everything looked normal. Except for one shelf. It was almost empty. The woman smiled, withdrew her hand and gently walked away. The elderly man put the rice in his basket. That was all. No argument. No raised voices. Nothing dramatic happened. If you were there, you might have forgotten about it before you got home. I haven't. Because that short moment made me think about a question I had never really considered. Why does one almost empty grocery shelf make people feel so uncomfortable? It Feels Like the Food Is the Problem At first, it seems as though the problem is the food. That's ...