The 4th dimension expands relative to our 3...

"Why does time's arrow point in the direction it points in? The fourth dimension is expanding relative to the three spatial dimensions.

Hence every photon naturally expands in a spherically symmetric manner. Hence every electron, or piece of matter that interacts with photons, is naturally carried outward from a central point in a spherically symmetric manner. Hence the particles in a drop of dye in a swimming pool dissipate in a spherically symmetric manner, and are never reunited. Hence time's arrow and entropy."

Hi! I've been into "Moving Dimensions Theory" lately and this snippet on time is from someone in another physics forum. I think this theory explains more things better than most b/c the underlying physical reality does bear out that the 4th dimension expands relative to (our) 3 spatial dimensions. I haven't heard Dr. Kaku talk about this theory, but I wish he would.

Cheers!