Re: error "Cannot switch buffers in (minibuffer | a dedicated) window"

[Richard Stallman]

    Wouldn't it make sense to just switch to the buffer in another window,
    instead of raising an error?

If you are trying to switch buffers in the minibuffer you probably
don't know you're in the minibuffer.  If you get an error you will
probably type C-g which will get you out of it.  Switching buffers in
another window and remaining in the minibuffer seems like a bad idea.