Yeah, it's pretty obvious when you think about it.

You have all the continents on the one side and ocean on the other so there has to be some sort of counterweight to make sure everything doesn't start slipping and falling off. This predictive use of the world theory led to the discovery of the golden island. Sure the four elephants provide a stable base on top of Arduin but you if you completely stock a plate on top of a glass only on one side it's going to fall off even though the plate is full of soup.

For any doubters they should feel free to take a ship to the edge of the world and take a peek at the irrefutable evidence filling up your entire view before your eyes. Your could argue that the world is multidimensional since some people are known to travel the mysterious L space but it hasn't been proven yet. Until then you can be sure that most evidence point to the obvious fact that the world sits on top of four elephants on top of the great turtle floating through space.

thanks, haha, I was checking the comments before I said "discworld"