I decided on a whim to start poking at Vim, based on Dan’s repeated and strong recommendations that I try it out. Of course I know full well that he wants me to switch away from Emacs, and I don’t mind humoring him.
However, after a very brief poking session, playing with the beginning of the tutorial, and mucking around in my .vimrc, I discovered something on the OS X Vim website: Vim does not allow for multiple top-level windows.
Dan reacted as if I were speaking a foreign language, but I am most definitely a GUI user. I use my mouse for things like selection and file navigation. I like the Application -> Window hierarchical paradigm on OS X. I think I made his head a splode.