In the model with the ball and the net, is the function correct, but the universe isnt a net and not two dimensional. And under the net must be gravity and the physicians want to explain the gravity with a net and a ball. Should be under the net another net?  And under the net from the net still another net too? Then i can told the world is a disk and stands on infinetly turtles.  The only posibility is that the gravity is three dimensional like a magnetic field, nothing