I've got 30 alerts, so I'll try to keep this going as best as I can. You sound like you know your stuff, and have given this some thought.
Don't overestimate my physics knowledge. I have taken a few college classes of it, sure, but I'm no expert. It's not even my major. I had to give a lot of thought into my response, that's true enough.
No, what we call light is a 3rd dimensional cross section of four dimensional reality. The 2nd dimension of a sphere gets curved when it becomes 3D.
So the properties of the lower dimensions continue to exist, but warp a bit when looking at higher dimensions? Interesting if accurate, but I doubt this would forgo the properties that light has in the 3rd dimension.
I am trying to develop a workable model to include the scientific observations of the last 50 or so years, without leaving behind the Scriptural understanding. Moving to a higher dimension is one possibility.
Many people on here try to do that. However, it'd be a lot easier on yourself to consider more of scripture to be allegorical than to try to take it literally. Heck, the bible never explicitly states the age of the Earth or universe, people derive that number by counting back through the generations of individuals in the bible. Given that the modern text is hardly complete, it would be fair to suggest that some of those generations are missing. Furthermore, no change in dimension is going to help you reconcile the various biological errors of the bible, or its internal inconsistencies. You aren't dealing with observations of the last 50 years, there are parts in that book known to be incorrect since ancient times, like how it gets the amount of pi incorrect.
I agree the range is narrow, but let me ask you this: How does God see everyone who ever lived all at the same time?
Asking a person that doesn't believe in deities this question is rather odd, since I don't ascribe qualities or powers to things which I don't believe exist. From a fantasy standpoint, magic, why not?
Fluctuations may be part of higher dimensional catastrophes, and not regular occurrences. Like one happened at creation of Adam, another at the fall, a third at the flood, etc. People were too busy with other matters to observe anything.
Scripture never claims that any of these events caused a change in physics. In fact, scripture often implies that the world is highly stable and unchanging. Something that your change in light speed notably lacks is a point. Slowing down the speed of light after established life already exists complicates matters and could lead to the universe falling completely apart, why would a deity bother?
What is the evidence the universe started as one singularity?
The background radiation of the universe and the fact that we can observe the expansion of the universe and trace it back to a single point.