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Exactly! I was teasing a little, but my real point is that if you're "rebuilding civilization" then so-called "alternative" ways of gathering usable energy are not so alternative anymore.

I have heard of the idea of "Peak Wood" corresponding to "Peak Oil", being the time when wood to make charcoal for metal smelting became scarce due to the scale of production and the inefficiency of the process.

It's a long way from the blacksmithy to the oil derrick.

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