Killer User Interface

So, what does the interface on an OS to make the singularity and unite metaphysics, epistemology, and math look like?

Well, the universe organizes a lot of data using 3 + 1 dimensions, so that's probably enough for us, too.

But within the mataverse, how will you type up the letter to your Congress representative? Entering one of the spheres in the metaverse runs an app. How do those apps look? Does it all operate behind the scenes with data or is the user-interface cross-communicating with other objects?