Yes I know that, see above where I said things get more complicated when you start talking about two planets. We had a conversation about this with RJ a while back. I don't misunderstand them. But you can look back at your post #90 where you said "how can you possibly object to anyone using space and spacetime interchangeably" . And then you can look at my post #93 where I higlighted "Note: not the curvature of space, but of spacetime. The distinction is crucial.". And you can eat humble pie over your horrendous misunderstanding of that.