Alexis- response

I disagree with Brad- when people say "ultimate" frame of reference, they don't mean best frame of reference, they mean ultimate. However they are talking about something that cannot be defined, ultimate is like a limit- something that would potentially be the best frame, but also something we cannot know. In science, things are never considered facts (or theories, I can't remember the order of importance) until many scientists have reached the same conclusions, but it is still understood that no matter how many humans agree, there is still the possibility that it could be wrong. This is because we can never test our theories in every possible situation. This is where I agree with Brad- I think (like everyone) that we should use the best frame of reference for our particular problem, and keep the word "ultimate" as a theoretical term only.