I noticed the thread from 2009 which answers my question fairly well
https://www.physicsforums.com/threads/universe-expanding-or-time-speeding-up.366055/
Might it not be meaningful to compare the rates of physical processes at different times to each other? Might light traveling between them offer a way to do this? I'm really just asking the same question.
I am far from expounding theories but was hoping for informed explanation of something that has been bothering me in a field in which I have no expertise. Clearly this is the wrong place to ask.
I'm happy to be "relabelled" as I no physicist.
But it is not nonsensical. I am asking exactly that. Might not the "constant" reference of time actually be the thing that is changing. You give no reason why this could not be so.
This has been bothering me for ages so I'm posting here in the hope someone can answer.
If the universe was not expanding and if time was not constant but instead was speeding up why would this not fully account for observed cosmological redshift? Wavelengths of light released long ago would...