There's no perfect vacuum, but the universe most definitely is not stuffed full. There's lots of radiation, neutrinos, photons, but it's not stuffed full. The distance you're talking about actually matters for describing the distribution of matter. Over very large distances the universe appears homogeneous.
Socrates is talking about the vacuum dimension and now reference frame...the biggest problem presently in physics would probably be 95% of matter and energy that is not well understood at all. Dark matter and energy, the stuff they're working on at CERN and other high energy atom smashers.
From your perspective it is not stuffed from the universes perspective it is stuffed, speed rules distance there,s little voids if you move at slightly less than infinite speed.
The Fog Clears Posted on October 13, 2011 by B Talbott (good reading lots of laughs)
The Big Bang is, if anything, mathematical. It may be the most doubt-free theory—nay, fact!—of modern science. At the present rate of improvement in precision, in a few years astronomers should be able to announce that the universe banged at 9:30 on a Tuesday morning.
The latest
improvement has enabled astronomers to measure the redshift of five galaxies that existed only a few hundred million years after that memorable Tuesday morning event. They can establish a timeline through the early period called the reionization era, when clouds of neutral hydrogen “fog” were gradually ionized and became transparent. They now know that 780 million years after the Creation Event, fog filled 10 to 50 percent of the universe. They find that only 200 million years later, the fog had cleared to today’s level.
The press release quotes the lead author of the paper announcing this result: “It seems that reionisation must have happened quicker [sic] than astronomers previously thought.” Although the grammar is in error, we can be sure the math is correct.
You guys realize Dexter will find this thread and start kicking major butt.
The exercise will be good fun for him. Such are his delusions. What does it matter if the poor old souls belts have slipped.