It was so hard for me to grasp at some point over a decade earlier that in the past, in the middle ages and earlier for example, that people would publish all these educational books…and none of the info was copyrighted; literally anyone could find some book published by some random Greek or Arab person and just take all the knowledge, and release their own stuff that just freely builds on the knowledge contained within, or that inventions could be copied by anyone and no one was like ‘pay me for my brilliance’.