The key here is that, unlike all other commodities, food is the one essential that cannot be postponed. If there were a shortage of, say, shoes, we could make do for months or even years. A shortage of gasoline would be worse, but we could survive it, through mass transport or even walking, if necessary.

But food is different. If there were an interruption in the supply of food, fear would set in immediately. And, if the resumption of the food supply were uncertain, the fear would become pronounced. After only nine missed meals, it's not unlikely that we'd panic and be prepared to commit a crime to acquire food. If we were to see our neighbour with a loaf of bread, and we owned a gun, we might well say, "I'm sorry, you're a good neighbour and we've been friends for years, but my children haven't eaten today – I have to have that bread – even if I have to shoot you."

But surely, there's no need to speculate on this concern. There's nothing on the evening news to suggest that such a problem even might be on the horizon. So, let's have a closer look at the actual food distribution industry, compare it to the present direction of the economy, and see whether there might be reason for concern.

The food industry typically operates on very small margins – often below 2%. Traditionally, wholesalers and retailers have relied on a two-week turnaround of supply and anywhere up to a 30-day payment plan. But an increasing tightening of the economic system for the last eight years has resulted in a turnaround time of just three days for both supply and payment for many in the industry. This a system that's still fully operative, but with no further wiggle room, should it take a significant further hit.