I agree with the opinion that there is no ultimate frame of reference. It is logical to think that there is no way to view an event in one way, and yet see all that is going on. It could be possible to take the stance that the universe, holding all matter, is the ultimate frame of reference. The universe is all inclusive and contains all possible perspectives. I wonder if this could be the ultimate frame of reference and we don't have the capability or knowledge right now to interpret it. Will we ever be able to interpret it? I really liked the idea Mach put forward with the rock experiment. If one were to do this in a universe with no matter other than that of the rocks and string, would it spin? Mach said it would not and would be meaningless because it isn't moving relative to anything. It is impossible to view all the forces affecting a single event unless we can see it relative to other matter. Unless we can figure out how to comprehend the entire universe, and i don't think we can, there is no way we can find an ultimate frame of reference.
*For Mr. F This is my first post and i talked to you about why it is late.