"not understanding how folders could exist inside of other folders" -- My mom is 70 years old now, and I easily get frustrated whenever she's stuck with seemingly simple tasks with her computer. I usually scold her and yell at her, "This is so obvious, how come you don't know?" -- I always regret doing that afterwards. After I'm calm, I ask her why, trying to understand it from her perspective. Every time I do this,…
The term "folder" already annoys me. It's a (filesystem) directory...
Directory is a UNIX thing.
On AS/400 (now IBM i) there are no directories or folders, rather catalogs.
Similarly other systems also had other denominations for group of files.