I'm trying to understand the concepts of physics, but there's one thing I don't fully get... If there is some matter with a spatial and temporal coordinate, let's say coordinate X, is the matter "in" that time and place, or "is" the matter that time and place? In other words, does space-time refer to the medium in which matter exists, or does it refer to the matter itself that exists there and then? Is matter part of space-time or is it something separate that is inside space-time?
I believe spacetime only exists as a perception of energy interaction Each unit of energy in a rock (lets call it atoms for now) interacts with each other unit in such a way that it effectively is a large solid object when interacting with our energy (our body). The size and location of the rock are constructs to describe energy interactions between the particles of the rock. space is just aa visualization for our brain. Look at it another way. In a video game, itemsin game exist. But in reality, the "space" they occupy, only exists on the screen and your brain. Otherwise its just code interacting -yuri