The Mirror Worlds of course come right out of physics, and the possibility of (mumble) universes and all of the rest of it. But frankly while I don't follow the literature, I haven't for a number of years, I occasionally get stuck on panels with physicists and I am supposed to discuss physics for which I am twenty five years out of date. But I find that I can hold my own, although I do not have a doctorate or did I ever intend to get one (I went to work instead). I can hold my own with the PhDs in physics when they are talking theoretical physics if I stop talking physics, at least from my point of view, and start talking theology and this troubles me.