[rellic]

In one of my past professions I was a Journeyman shipwright.
I can and have built large wood sailboats from scratch.
Those ancient guys may not have had the written word, but they had mentors.

[no-s]

> Those ancient guys may not have had the written word, but they had mentors.

Tacit knowledge is the foundation, passed from generation to generation, embodied in the created artifacts.

[marktwain]

Those ancient guys may not have had the written word, but they had mentors.

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Yes, and seaworthy vessels can be constructed from a single tree and outriggers.

It is not a particularly advanced technology. It takes fire and stone and shell tools.

Ancient people were just as smart as us. They were limited by the tools available to them.