The famous one is the rubber sheet description of gravity, in which a bowling ball represents the Sun and a marble represents a planet. Depending on how you roll the marble, it will circle the Sun and eventually fall into it.
It's misleading because it relies on gravity to explain gravity, only represents 2D curvature, while real spacetime is 4D, and overlooks time dilation. It falsely suggests that objects “fall in” due to a dip instead of following geodesics and fails to clarify how gravity bends light.
A better understanding comes from recognizing that gravity alters both space and time, directing objects along curved paths in a self-contained, four-dimensional spacetime without requiring an external force or higher dimension.
