How does string theory explain why gravity warps space-time?

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Offline Dave Fangrow

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Across the range of string theories I'm wondering how the observation of gravity warping space-time is described?  Is it suspected that the graviton string is actually 'attached' or looped through our Calabi-Yau shaped space/time fabric, as opposed to the other force/particle strings that do not stretch space-time?

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Offline Vern

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How does string theory explain why gravity warps space-time?
« Reply #1 on: 13/11/2009 19:30:42 »
My understanding is that neither string theory nor Quantum theory explain why gravity warps space-time. Both seem to have abandoned the notion of cause and effect, so they do not entertain "why" type questions.