Toban, I just realized that you wrote that blog to which you linked. I just can't agree with what you have to say here either:
"Consider an Alaskan and a Colombian trading salmon and coffee. Despite
the great distance separating them, this arrangement is the cheapest way
of providing the Alaskan with coffee and the Colombian with salmon. If
they were to “buy local” they would have to resort to very costly
(wasteful) methods of production (such as greenhouses or cold-water
tanks) or forgo the product entirely. Needless to say, they are both
much worse off without trade."
How do you define "worse off"? Looking at health, the isolated peoples that Weston Price studied, who all relied entirely or almost entirely on locally produced foods, were NOT worse off than their neighbors who were trading local foods for imported white flour and sugar products, in fact they were better off without the trade. People often make trades without actually knowing the full consequences of the trade; trade isn't automatically beneficial to both parties.
You also set up a false dichotomy re. buying local would involve Columbians trying to produce salmon and Alaskans trying to produce coffee locally. How about Columbians eating local fish and Alaskans brewing local plants?
I'm not saying I'm against trade. I'm not against trade. But I don't buy these arguments that make trade look ideal compared to relatively little trade.
More thoughts:
First, transporting salmon to Columbia is different from transporting coffee to Alaska. Salmon requires freezing or refrigeration that coffee does not require, and fish produced local to Columbia would require relatively little, perhaps no refrigeration compared to salmon produced in Alaska. Thus, we could say that salmon shipped to Columbia involves "very costly (wasteful) methods of production" compared to fish sourced closer to Columbia.
Also, your argument rests on the "inexpensive cost of transportation." "This is why so many goods are produced non-locally: the savings from
producing in a more efficient location exceed the costs of
transportation. " But our present apparent "low cost of transportation" exists only because the costs of transportation are largely or entirely socialized: primarily roads built and maintained by government using stolen funds (taxes), subsidies of oil production using stolen funds (taxes, deficit spending, etc.), publicly funded wars in foreign lands to protect access to oil, airports built using eminent domain and stolen funds (taxes), rails built using eminent domain and stolen funds, etc.
Essentially, Walmart is profitable only because it does not have to bear the major costs of transportation, because those costs are borne by the taxpayers. In the absence of this, Walmart would have to pay directly for the roads, unsubsidized oil, etc, etc.
Take away that subsidy and I think we would find that trade would not look so "economical."