Risa strongly recommends an article in, despite her reputation as a flaming liberal, The American Conservative: "Wreck of the Irish" by Brian Kaller. He says, among other very well-observed things, this:
Friends of ours here describe how, as children decades ago, they walked miles to barter with neighbors—say, trading beans for flour. Such everyday acts would require substantial adjustment for many Americans. To begin with, children would need to be capable of walking for miles; for safety, they would have to know most neighbors along their way. They would have to be able to grow or make things to barter, and their parents would have to know what to do with beans and flour.Do read the whole thing, and especially the last bit.