Similarly, I wonder if it's something where adding to it doesn't actually do much, like all the variations you see done on Turing Machines (adding more tapes or

Similarly, I wonder if it's something where adding to it doesn't actually do much, like all the variations you see done on Turing Machines (adding more tapes or 2d tapes etc.) which seem like they would increase its capacity somehow, but it turns out they have the same power as the original Turing Machine. Or like the arithmetic of infinite numbers, e.g. aleph-0 + aleph-0 = aleph-0.