3 ms·
The "How to make everything" YT channel (https://www.youtube.com/channel/UCfIqCzQJXvYj9ssCoHq327g https://www.youtube.com/channel/UCfIqCzQJXvYj9ssCoHq327g) does
by roel_v 5y ago
The "How to make everything" YT channel (https://www.youtube.com/channel/UCfIqCzQJXvYj9ssCoHq327g https://www.youtube.com/channel/UCfIqCzQJXvYj9ssCoHq327g) does that. He started from digging up clay with his bare hands to make pots, and is now roughly in the iron age IIRC, melting iron using only stuff from earlier 'tech tiers'.
One thing I found interesting is that apparently many metals used to be collected from ores just laying around. Those sites are all exhausted today. So a full 'reset' of the earth wouldn't be possible today. Of course metals could be scavenged from the machines we have now (in a nuclear disaster style scenario), but we could never fully 'redo' the technical evolution we did over the last 10's of k's of years.