>>Images are just folders that Docker puts somewhere and then calls chroot (or pivot_root) to make that folder your container process’s new root directory.

And folders are graphical representations of directories--sometimes, not always--and not directories themselves. When will the newbies get this?

The high level abstraction is more important than the low level implementation unless the low level implementation is leaking through, or there is a significant advantage conveyed by understanding the low level implementation.

I know a lot about how http works, and it comes in handy, but I can understand how juniors get away with not knowing it as fully as I do.

Directory is a bad metaphor too.