What if the speed of light is related to the size of the universe? However perception and size is also related.
So the universe is expanding. What affect does that have on perceived speeds?
What if the speed of light is relational to size of the universe? Would it cover more distance in a smaller universe? If so, does that mean C was faster? This is where the normal brain starts to spin wheels a bit.
But it's a lot of fun. And I'll be highly amused if their experiment bears support for their theory. As I first heard this theory decades ago.