nit picks on this: Humans are capable of detecting extremely small details with their fingertips[1] anecdotally, this can be trained if you use your finger tip

nit picks on this: Humans are capable of detecting extremely small details with their fingertips[1] anecdotally, this can be trained if you use your finger tips for precision work a lot, you can easily feel things that you can't see without significant magnification. Additionally, I would push back on "many centuries", the Machine age came about in the mid 19th century, so if were being generous, 300 years[2]. [1] https://www.sciencedaily.com/releases/2013/09/130916110853.htm https://www.sciencedaily.com/releases/2013/09/130916110853.h... [2] https://archive.org/details/englishandameri01roegoog/page/n286/mode/2up https://archive.org/details/englishandameri01roegoog/page/n2... [2] is cited on the wikipedia page for micrometer. Cool book though, might read it.