[DennisP]

But also, imho, it would be a compelling way to learn how the stuff of civilization actually works.

Maybe I'm weird but it's always sorta bothered me that if I accidentally went a thousand years back in time, I wouldn't know how to restore any significant modern technology. In the same way it used to bother me that I didn't know how to make stone knives and fire without matches, the most basic technologies of human history. Learning how and doing it made me feel like a more complete human being.