 I raised a question that's never been answered by anybody. We're given the plate tectonics theory as a given mechanism. It's already in operation, but it has to start somewhere. Did it start with the trenches, or did it start with the ridges? The new material coming up, or the old material sort of going down and dragging the plates with them. Well, I think it actually began with the heat, the convection driving up and creating the ridges. Well, then the Earth's