Each reference might give us less or more. My point is that all of our measurements of time are made from our perspective hear on Earth. We can only say that the universe is 13.7 billion years old as measured by someone on a planet that has the same cumulative velocity of Earth. Someone on another planet with a greater accumulative velocity would presumably view the universe as being much older than we do.
No, not true.
You are mistaking the measuring system and the thing being measured.
If someone uses the metric system to measure an object, while another person uses the English system, they will get two different answers. Each answer is correct
related to the reference they use.
We have no way of knowing how we might perceive our environment if we had acquired a different set of senses. Maybe there aren't other senses to be had but we don't know.
Irrelevant.
We do know what we have. Knowledge of the universe is evolutionary, over time we learn more. However that has nothing to do with the reality itself.
Science truly represents reality, but it is just what WE know about reality, not the reality itself.
Aslan is not a
Tame Lion