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

Because it is easier for people to imagine a 2D surface that is bent then a 3D filled that is bent. Because it has to bend into a different dimension.

There are ways that you can represent that, but most of them are not that intuitive compared to the 2D model.