reply to post by resistor
After replying to your post once, I had a further thought.
The sheer amount of food needed by cities will VERY QUICKLY empty them out, even the 'burbs.
Suppose the average person needs around 10 lb. of food per day to maintain themselves. I figure that probably includes packaging as well, when
averaged out across a truckload. Figure a net weight around ~50,000 lb., and a semi might haul, say, food for 5,000 people for a day.
If those numbers are even in the right ball park (and they might be off by orders od magnitude), you're looking at 20 trucks for every 100,000
people, or
200 trucks for every million in population, per day.
So, the Dallas-Fort Worth area would need 600 trucks per day. Think of all that diesel. All that maintenance. All those forklifts to unload. All
those operators, distributers, etc.
And how much of the US diet is processed food? Look in the grocery, at the space taken up by the staples: flour, milk, eggs, salt, and sugar. In
most stores, it's less than a tenth of the total floorspace. And those are things that don't need factories full of workers to process for sale.
In theory, you could sell milk locally, and start "decentralizing" it's production. But you cannot de-centralize a can of soup, or a microwaveable
dinner---you need factories to make those things as they exist today.
Now, the free-market system is so resilient that even with a huge shock (like say, $8 gasoline), the food production/distribution system will bounce
back and adapt to the new state fairly quickly. Even so, the population will also respond, by spiraling down below the threshold of 200 people per
square mile. That either means emigration, war, famine or plague.
So, I'd have to say that there won't be enough food to support the suburbs in anything like their current state, if there is any severe shock at all
to the current system.
Back in world war II, the US kept it's cities going with "victory gardens." This made up for the gas rationing, that limited the greens you could
get at the grocery. On the other hand, suburbs as subdivisions didn't even exist yet.
Even with victory gardens, I bet things would be below 200 ppl/mile within a year, 2 years at most.
Thanks for making me think, folks.
.