>You can put Folders on the Desktop, but there's also a "Computer" icon on the desktop which allows you to browse into other folders.. including the desktop?
That's a specific failing of Windows, not something inherent to the folder metaphor, though.
It's one of those absurd things that happen when nobody pays any attention to coherence. That particular thing has driven me BATS for years.
I'm encouraged, though, that my Win10 machine here doesn't seem to continue this foolishness. WinExp used to always show the Desktop as the "root" of everything, but it doesn't now. The quick access pane shows This PC as the root, with quick links below it for Desktop, Documents, etc. It's almost like MSFT is learning.