This is interesting, I have always thought of our virtual reality be a low tech version of our perspective on life. I am currently working up the dimensions, figuring out their role in the multiverse one at a time. They are a bit like building blocks, to a 'multichoice' like existence.
0D - Single Node, possibly a single qubit resembling the job of a voxel within our Cartesian world. Imagine a voxel with a side length of 1 planck length, but with qubit like properties, that take the form of a particle but behave like a wave. Sound familiar?
1D - Stack of Nodes that help to create timeless vectors.
2D - Stack of 1D to form a 2D vector plane.
3D - Stack of 2D to form a volumetric field.
4D - Finally our state of existence. 3D fields stacked in time like that of stop-motion animations. Imagine that 1/planck time is equal to the frame rate. This frame reference is very rigid, and only allows one possibility for both the outcome and how the outcome is to happen. Superposition could be regarded as proof of this, as when one outcome is observed, no other can be realised. Multiple states are known to exist, but only one can exist in our reference. It is like watching a standard YouTube video. It is linear in fashion, and no matter how many times you play it, it will always happen exactly how it played the first time.
5D - Again a stack, but is the dimension that allows multiple probabilities to exist simultaneously. The best way to visualise the 5th dimension is to watch a 360 degree video on YouTube. The start and finish always has the same result, but the path taken to get there can be completely different. The same video can be played back, but with each time, the views will be different based on your 360 degree observations.
6D - The best way to explain this dimension, is to think of a video game with a story line. You have the illusion of free will, based on the way you can freely make choices about your navigation through time. You can choose whether or not to go into one room or the other and have completely different outcomes for both. One route might take longer to complete for example. But the story ends the same regardless.
7D - Feels very similar to the 6th, but different outcomes can be achieved for different 6th dimensional choices. Almost the win or lose scenario in the game, depending on the choices you apparently make for yourself only much more complex and plentiful.
And this is where I have got up to so far. Every dimension seems to get harder to visualise as to do so I have to think deeply about how we exist, and how the multiverse has to function.
Just a day at uni for me