Sunday, 25 October 2009

'A Universe From Nothing' by Lawrence Krauss, AAI 2009

This is must watch.

If you are viewing this anywhere other than my blog, you may not be able to see the video... Here is the link to the original post: 'A Universe From Nothing' by Lawrence Krauss, AAI 2009

Krauss is evidently a brilliant physicist, thinker and entertainer.

However I am not entirely convinced by this line of thought that says because the net sum of energy in the universe is zero, and because quantum physics allows or even requires the occurrence of improbable boundary events that that is enough to provide a truly satisfying answer the question "why is there anything rather than nothing?" All the same it does seem to be a fascinating set of ideas coupled with experimental results.

Apparently it has now been shown conclusively and beyond doubt that spacetime is flat, that the universe's expansion is accelerating, that in about 5 billion years time other galaxies (stars) will be disappearing from the sky of our galaxy because the speed of expansion will exceed the speed of light (which is theoretically possible under general relativity - although not under special relativity).

I'm not saying that the answer to the "why is there anything rather than nothing?" question is a creator god either. But I'm more inclined to think that this is an impenetrable mystery - the mystery of origin. And that being is designed in such a way that this origin is deliberately or at least necessarily incomprehensible, outside of its own vision, and mysterious. I am not meaning to suggest we should give up the quest as hopeless - quite the opposite.

But personally I find peace in my own heart from the knowledge that when you are looking from the inside of something, you can only at most imagine what the thing you are inside looks like from the outside. This is really the heart of the mystery, not the cause-and-effect of what came before the quantum-fluctuations that initiated our particular universe.

Anyway, if you have an insight into how any of this fits together, I would be grateful to hear how that goes.


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