Fact is that the middle of a cube can’t be specified with a rational number.
The orthogonal fact is that the middle of a cylinder can’t be specified with a rational number.
Instead, the middle of a cube can only be specified with an irrational number, and the middle of a cylinder can also only be specified with an irrational number.
The reason is that positions in one coordinate system can be transformed into positions in another coordinate system (a cube is a Cartesian coordinate system and a cylinder is a polar coordinate system), because if one value in one coordinate system is the same as the corresponding value in another coordinate system, then the two coordinate systems are not different, ie, are the same, coordinate systems.
This fact may appear confusing, but is actually no more confusing than the foundation of mathematics that “the derivative of an integral of a function is that original function” (or that the integral is the reciprocal of the derivative).
The problem is that if there is a middle, which we think there must be, then there must also be a middle between middles, and so on… This is the simple (conceptual) explanation of the voidness (or emptiness) of The Middle. More difficult to understand is that this explanation also appears to be real, ie, exist outside of our heads. The explanation does thus appear to not explain reality, but rather be reality, in that it explains the driving force for reality, ie, as an ulterior emptiness (which we call The Truth, like God, the True Tree of Life of cladistics and Higgs particle of particle physics).
In this sense, The Middle does thus “exist”, but it does not mean that we can find it, as cladists and particle physicists erroneously believe, but just that it is the driving force for reality (including our reasoning about “reality”).
The only way to liberate ourselves from this driving force (ie, from the eternal carousel between war and peace) is to understand it, ie, to understand the void (empty) middle. As long as we don’t understand it, we just play our predestined roles in this predestined play.