Yes. See Einstein talking about it here: "The two types of field are causally linked in this theory, but still not fused to an identity. It can, however, scarcely be imagined that empty space has conditions or states of two essentially different kinds, and it is natural to suspect that this only appears to be so because the structure of the physical continuum is not completely described by the Riemannian metric." That's what Einstein said. Nothing. And there's nothing hard about the plot of potential that has to be curved to get off the flat and level. But your pencil doesn't fall down because "the spacetime in the room you're in is curved". Or because "the space in the room you're in is curved". So why does it? Come on Quackhead, we're nearly there. One last push.