So if you want, you can believe that gravitational effects are due to a curvature of space-time {even if you can't picture it}. Or, like Weinberg, Wilczek {and me}, you can view gravity as a force field that, like the other force fields in QFT, exists in three-dimensional space and evolves in time according to the field equations."
( Rodney A. Brooks )
[ Fields of Color: The theory ]
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