"In a hierarchy of probability, is it less mundane to consider the ETH than it is alternate dimensions? I tend to think so. In fact I see the whole notion of something coming from alternate dimensions as nonsensical."
I get where you're coming from. With respect, I think that the ETH and the "alternate dimension" hypothesis (Moseley called it "3 1/2-D") are both outrageous hypotheses. I don't think either is impossible. The main thing the 3 1/2-D hypothesis can do is explain (?) some of the extreme weirdness of UFO encounters. It's a philosophical last resort, almost like saying "Fortean", i.e., we don't understand what is going on, and it must come from somewhere that's beyond our current scientific awareness. The biggest flaw in the ETH, which is often unstated but nevertheless glaring: There isn't a shred, not one, of physical evidence, from fifty-plus years of UFO sightings, close encounters, and landings. If these are physical ships made of metal or whatever, they're going to leave a trace of something. A lot of the 3 or 4-D UFO stuff doesn't go so far to state "inter-dimensional", which, even though physicists play with the ideas all the time in quantum and string theory, makes me as queasy as anyone. To me, it's more about human consciousness, i.e., UFO's seem to have an interest in human consciousness; they behave in ways that make no sense for space travelers, they seem obsessed with us. The idea of an alien species traveling huge distances, just to buzz us a few times and sow complete confusion, seems really nonsensical. Why would they be so obsessed with us? We study sea turtles, great apes, botanical curiosities, but we're hardly going to great lengths to mess with their minds, so to speak. I agree with Jim Moseley's philosophy, which was that whatever this intelligence behind UFO's may be, that it's connected to us, somehow, and not, as he once wrote me, "space ships or space men" who just happened to stop by. Of course, I'm no wiser than anyone else on the matter. But I appreciate all the opinions on this thread. This forum is about as good as it gets on this subject on the internet. My best to all of you. (apologies for philosophic non-sequiturs throughout, tough to avoid in Ufology!)