1D and 2D are just mathematical abstractions. Everything is just 3D and that’s it. There is no time, just space with a state.
Just like every “2D” object has thickness, every “3D” object has a temporal duration. Without duration, it wouldn’t exist.
So everything is at least 4D, 3D doesn’t exist.
squaresinger@lemmy.world 1 hour ago
Dimensions are primarily about coordinate systems. They are about the question of “Where is something?”.
1D and 2D exist and are used all the time. If you are moving your pawn to e3 in chess, you are using a 2D coordinate system.
If you have an accident and you call emegency systems and tell them that you are at highway kilometre 134.5, then you are using a 1D coordinate system.
The idea that there would be an n-th dimension as a physical space is nonsense and it’s also not what dimensions are about at all. That’s what happens if fiction authors hear fancy terms without understanding what they are about.