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Benjamin Davies addressed criticism #5385.
#5385·Benjamin Davies, 2 days agoit’s an excellent approximation
It's an excellent approximation to what? Reality? How do we know that?
This assumes ‘approximation’ means measurable closeness to an unknown final theory. In context, it actually means that GR’s predictions closely approximate observed gravitational behaviour in its tested domains. We can compare predictions with observations without knowing the final theory.