(Under construction. I want to include this section because this was the conversation between Sandman and my father which led to their ongoing interaction and indirectly to my acquaintanceship and friendship with Sandman. Alas, I do not have a physics background and little understood my father's work and have forgotten most of what I had understood. I have to dig through his notebooks and get back to this some day - probably not soon.)

During the 19th century Physicists believed that light required a medium of transmission much as sound waves do. It was hypothesized that a universal aether was such a medium and much effort was expended to detect it. In one of the most famous negative experiments in the history of science, the Michelson-Morley experiment failed to find any evidence of its existence. Then when Einstein constructed his theory of special relativity without any reference to the Aether this subsequently became the accepted view, thus providing another example of a theory chosen in part for its greater ontological simplicity.

Grover Tuck hypothesized that these folks erred in throwing out the ethers concept. There is no such thing as a vacuum, as all space consists of the ethers in which matter is embedded and through which electro-magnetism and gravity propagate, like waves through water.

One part of his theory I do vaguely remember is that the lifetime of particles could be deduced by understanding their configuration and how long it would take them to 'realize' they were unstable. That is to say, how long it would take them to tear themselves apart due to the particle sensing - interacting with - itself. For instance if the particle's configuration were a ring of a certain diameter, it would take light (or gravity) a finite amount of time to cross the diameter from one edge to the other and then destabilize itself. If you know the configuration assumed by the various unstable subatomic particles, you can deduce their lifetime.

aethers = ethers = medium = Ylem

How long did the great singularity last (or what did time mean in that condition)? Perhaps from within a black hole, it simply looks like a universe (so that our universe is perhaps a black hole in a less dense one). The Ylem's density is that of the black hole, and within that precipitate particles yet more dense. The speed of light and all the other constants are fixed (given their value) by that universe's density, and it might unfold, evolve, producing life forms within the black hole that would eventually (by their measure of time) have to deal with the cataclysm of the Big Bang, from within, or perish.

Local variations in the density of the Ylem produce variations in the constants, including the speed of Light.

(As I mentioned - "Under construction - no end in sight")