Wait a minute! Are you saying that the fourth dimension is expanding
relative to the three spatial dimensions?

PLaToPeS

Yes indeed: The General Postulate of Moving Dimensions Theory:

The fourth dimension is expanding relative to the three spatial
dimensions.

The Specific Postulate of Moving Dimensions Theory:

The fourth dimension is expanding relative to the three spatial
dimensions at the rate of c in quantized units of the Planck length.

Classical physics, quantum mechanics, and relativity descend from this
simple postulate. Light, and thus all energy, is quantized as the
dimension which transports it expands in a quantized manner. Light
travels at a constant velocity in all frames because velocity is
measured relative to time which is measured relative to the light that
is transported by the fourth expanding dimension. Thus both fundamental
constants h and c emerge from the fundamental nature of the expansion
of the fourth dimension relative to the three spatial dimensions. And
thus MDT provides a simple, unifying postulate accounting for the
classical, relativistic, and quantum mechanical properties of this
universe.

And it's always been simple postulates, as opposed to abstruse
mathematics and mythologies, that have furthered physics.

http://physicsmathforums.com/showthread.php?t=60