I feel like a single human could trial and error their way to a very good paper airplane over the course of 2 or 3 days. It seems pretty obvious that a large gr

I feel like a single human could trial and error their way to a very good paper airplane over the course of 2 or 3 days. It seems pretty obvious that a large group of people would trial and error products in much the same way, especially those so essential to their civilization. Especially with the large trade networks that we know to exist back then.