I am not thinking about a change IN our nature! I am thinking our current nature is the result of a change. You do not know what changed or how, to leave nature as it is today. Your argument is a strawman.
No no no. Speed is how must time something takes to move through space! It would not be that something went slower or faster, that whatever it did, there was not time as we know it to move in. Without time, nothing can TAKE time to do anything, including move. Also, without time existing in far space, as we know it here in the fishbowl, we could not expect anything to take the same amount of time out there. So the question is do we know time is the same in far space or not? (Not 'did the speed of light as we know it in the solar system area change')
That depends if gravity itself was not the same, or if there were some countermanding force that used to exist also.
The fact that huge blocks were used and moved in the more ancient structures, and that they got smaller in some cases fairly suddenly comes to mind. One could suspect that they had some way to, at least at times, overcome gravity. But I neither know, nor care too much. If YOU claim no change happened, fine, if you have hard evidence, I could accept that.
But when you talk about objects attracting each other in far space, that are of unknown size or distance I have to ask how accurate your gravity calculations are!
The funny thing is mass itself is determined by nature!
In deep space for example we see this..
"But there are other objects in space that astronomers are very interested in knowing their masses: stars and galaxies. The
way to get the mass of these objects is to look at the
gravitational interaction with other objects nearby. For example, if you have two stars orbiting one another and you
know the distance between them and how long it takes for one to go around the other, you can calculate the mass of the stars. Similar tricks apply to measure the mass of galaxies, for example by measuring how fast they rotate."
How do we weigh objects in space? (Beginner) - Curious About Astronomy? Ask an Astronomer
So they use realities on earth that we see now, the force of gravity for example, Then they assume that star would follow the same rules. Then they use distances derived from a belief time exists with space the same out there. Then they use the time we observe HERE on earth or area, in the light from that far away star. That is several beliefs piled on one another.
Also, looking at earth and mass and gravity here, all we can do is measure how it is now! Tell us how this tells us the force of gravity...etc was the same long long ago?
Or simply change the forces that cause earth to have the mass it does!
The way nature changed would not be a change in nature itself as we know it. OUR nature did not change since it came to be. We would not be looking for cataclysmic physical changes, but rather, looking at a possible change in the very forces that used to exist. Not a tweak IN our present nature, but a change in the former nature orchestrated by the creator.
Now, they do, at least in the solar system/earth area. When did this start, and how would you know? You look at the forces of nature existing today, and simply use that to model the past!
Says who? Einstein? He never got out of his veranda in this universe! He sat there on that veranda talking about what he thought an observer should/would see coming in the fishbowl at the speed of light! His math was fishbowl based and therefore relativity is relative to the fishbowl. He took the time and space we know here to model. There IS no other observer in the universe, he/we have only ONE observation point of reference...the fishbowl.
Yes, we see relativistic effects in far space. But since we do not know sizes or distances or what else may also be working on objects that we are not familiar with here in the fishbowl, it does tell us much.
All claims dealing with time outside the fishbowl are extraordinary!