Why is gravity visualized by putting a heavy object on a flat plane, creating the curved shape, when space is 3D?

Question

Wouldn’t it curve and pull objects in all directions?

In: 279

Answer 1

It’s very hard for us humans to intuitively visualize 4 dimensions, which is what would be required to effectively represent 3-dimensional warping.

Much easier to show 2-dimensional space being warped to 3 dimensions and then say, “but now imagine the rubber sheet is 3 dimensional.”