

Honestly, our own sight is a kind of “metaphor” - what we see is a construction the brain creates to make sense of visual data, but it is not those visual data themselves, in some sense we only see in metaphors.
Maybe that bends the meaning of metaphor. Maybe better examples would be like skeumorphisms in graphical user interfaces, e.g. a trashbin on a desktop that you can drag files to. Obviously there is no literal trashbin, but I think people start to think in terms of those metaphors and forget there aren’t actual files and folders and a trashbin, and when the computer behaves in a way that doesn’t accord with those metaphors, it’s frustrating and confusing for them.
You forgot: