not in sci-fi either.
You can say all the universes are part of one big 'macro' universe - it's just we can't visit the others but we can't visit other galaxies either. So it works out to be the same thing, in my mind anyway. I think there'll always be people who are curious about that type of thing. The only thing that would worry me would be if our theories get so far ahead of observation or experimental science that they cease to become relevant scientifically.
Yeah it's obviously a very subjective thing.
Hence the question is invalid at present. The question "What colour is the loch ness monster?" would be meaningful if a theory emerges proving its existence. Till then it's a meaningless question.
It's similar to this: before we knew about extra-solar planets, could we ask if there was water on those planets? No. It's just that we lacked the ability to frame it appropriately because we weren't aware of the existence of planets, let alone water on it. Is the question itself meaningless? No. It's merely premature.
I think we're arguing semantics here, but I do not think it is at all similar to the unicorn analogy. Did something exist before t1 is a valid, if premature, question. In fact, one of the main purposes of a theory of quantum gravity would be to answer if that question is valid - I would say it's one of the more important questions - to give us an impression of a unified force. So no, the question is not meaningless, it's one of the reasons for trying to find a theory of quantum gravity in the first place.
Last edited by silentstriker; 09-05-2012 at 09:00 AM.
Happy birthday to the great man. Would've turned 94 today if he were still alive.In general, we look for a new law by the following process: First we guess it; then we compute the consequences of the guess to see what would be implied if this law that we guessed is right; then we compare the result of the computation to nature, with experiment or experience, compare it directly with observation, to see if it works. If it disagrees with experiment, it is wrong. In that simple statement is the key to science. It does not make any difference how beautiful your guess is, it does not make any difference how smart you are, who made the guess, or what his name is — if it disagrees with experiment, it is wrong.
Originally Posted by Peter Mooresforever 63*
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