I remember my colorful, recently departed uncle starting a conversation like this: "I recently read something about... doorways. Like when you walk through them, it does something to your brain. Something when you enter a new room... Hm. I don't remember." He proceeded to take a sip of his homemade hooch and we carried on making memories at that family reunion, as we did for so many good years. This was many years ago, and that anecdote always stuck in my brain. It piqued my curiousity, but I...