I don't understand the Radio principle, mainly because I'm not sure if he's saying what I think he's saying. "Why can't you listen to radio Moscow?" I thought it was because the radio waves couldn't reach Moscow's radio waves. :P
I probably just didn't catch that part though. Regardless, it's nothing I haven't heard before and is nothing new. Deja Vu is exactly what he said in most cases: fragments of past memories resonating with a current situation. As far as quantum physics is concerned in multi-dimensions, I wouldn't hold it past the theory simply because it's an interesting theory. However, it's really nothing more than the former. Deja Vu is the resonance of memories to a current situation and psychological/neural science has generally proved this through various studies, even though it hasn't been pinpointed yet (just like a lot of things in the brain). Either way, good vid, but I wish it would have focused less on the quantum fluff and more on the psychological aspects.