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This question already has an answer here:

Is gravity a property-curvature of space-time it's self as descriped in GR?

Or the notion of 'graviton' is necessary in order to embed the 'classical GR theory' to the quantum's mechanics 'world' because it is considered more fundamental?

Or they can be both valid as well, because there's no such contradiction?

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marked as duplicate by Void, knzhou, John Rennie gravity Oct 4 '18 at 11:14

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