We’re not. Jack is just another way to say “guy”, “man”, or “dude”
Edit: or more specifically but less relevant now, “peasant” or “commoner”, someone of low social status.
Kind of interesting to compare to “Guy”, another instance of a given name turned into a generic term.
That’s not really a hierarchy thing though.
Just a measure of how skilled / experienced someone is, and how suitable it is for them to be teaching someone else.
I think we need more people sharing their knowledge and we don’t need the blind leading the blind.
If it helps, there is evidence that you don’t actually need to reference them. Just writing them down helps the memory process.
https://www.scientificamerican.com/article/why-writing-by-hand-is-better-for-memory-and-learning/
I don’t think it’s just people in Italy…
… 9/10 response. I chuckled!