I was just interested in the idea that primitive man, at some point, had technology that might not have been primitive at all (by modern standards).
What this discussion brought to my mind were things in ancient myths/literature from mostly the Babylonian/Assyrian/Sumerian/Akkadian areas as to demigods (Apkallu) passing on technology (among other things).
I will also freely admit to anyone that I would not have the tenacity to use hand tools to accomplish what they did.