What isn't possible? Light is made up out of particles called photons. This is a plain fact. It is pointless to call it impossible... Why couldn't this be the explantion of the argument? On what do you base this? You state that two alternative dimensions couldn't exist in the same place. This may be true (Ihonestly do not know) but as I said before, I'm not talking about alternative or parallel dimensions, I'm talking about alternative universes. For those of you unclear about the difference between dimension and universes... We have three dimensions (four if you take time into account, as Mask so accurately pointed out before). Of course, it might be possible for more dimensions to exist. In that case, these dimensions would be part of our physical universe, we are just unable to detect them. For example: you draw a puppet on paper. Now, this puppet, if he were alive, could only detect two dimensions, because he only exists in two (I'm neglecting the thickness of the ink on the paper here for obvious reasons). For the same reason we would not be able to detect beings living in, say, five dimensions in our physical universe. Parallel universes are another thing altogether. Parallel universes or, to put it differently, the mutiverse states that are countless universes. That means that there is a universe in which I didn't posted this topic, as there is one where I did. There is a universe hwere I didn't just take a sip of my beer (as I just did) and there's one where I did. There's a universe where Hitler won WWII and one where he didn't. Etcetera, etcetera... So this makes for literally an infinite number of universes... First I didnt say anything was impossable. Second, How could there be two universes where in one hitler won the war and one he didnt. if they had different outcomes chances are there wouldnt even be a hitler so it wouldnt be parellel. Finally,your experiment that you claimed proved a parellel universe, all it claims is that there is a particle of energy that wasnt there before, there could be a lot of explinations, if i knew anything about how light works and how energy works, i could argue with you. but i dont so im not, at least not if you quote me wrong and say something else. If you read what i said, "wouldnt it be possable" where i didnt so clearly say what was possable but i meant that you could get a second particle without there being a parallel universe.