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500 years in the past, metal would still be relatively scarce and precious, where in the notional postapocalyptic future that people enjoy fantasizing about, the ruins of today's world would offer a veritable cornucopia.

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That's very interesting. Tbh even though I think bout postapocalyptic situations a lot I never thought of that.

Bret Devreux had a very fascinating history of how iron was made posted, long read but it explains a lot of the complications and work that went into historically making iron, and many of the reasons metal was so rare & expensive. Well worth a read.

https://acoup.blog/2020/09/18/collections-iron-how-did-they-...

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