Precisely my point.
However, just because a printing process operates in 4D doesn't make it a 4D printing process. Laser printers operate in 3D (and 4D for that matter), but their output is 2D. Governments operate in 4d, but their output is generally 1D at most.
Oh, what Dave could do with a noggin-cracking stick that reaches back into last week! (or, a micro-ruler wielded as a traditional Catholic school knuckle-mangling rebuke) He could easily revolutionize Australian politics.