We'll never know about the people who made big breakthroughs in metallurgy and textiles and other areas, sources are scant and literary people largely didn't re

We'll never know about the people who made big breakthroughs in metallurgy and textiles and other areas, sources are scant and literary people largely didn't respect the people who worked on practical matters well into the modern era. For example, the existence of the Antikythera mechanism means that there must have been a community of people doing precision engineering back in classical times. None is mentioned in any surviving sources.