And speculation without a testable hypothesis is as useful as The Bible. But GR is a bad example to make your case.
Relativity - that is things are relative TO each other. And the relationship is clearly defined. So you can always measure one thing in respect to another to yield prediction.
Any time you have a relationship between two inter-dependent variables and you can measure both then you necessarily have a transfer function!
If you have a transfer function - you have prediction! Because causality.
Uh what? I am not attributing anything TO red shift! I am USING it to measure the expansion. It's just a metric.uwot wrote: ↑Sun Sep 30, 2018 11:56 pm You are no more or less attributing the acceleration of the expansion of the universe implied by the observable red shift, than you are attributing the Earth going round the Sun because it is following a geodesic. It's completely superfluous from an instrumentalist point of view and many physicists don't bother. Others do.
To the question of "how do you measure dark energy" - you said "red shift". I countered with "that is how you measure the universe's expansion". If you are using red shift (universe expansion) to measure dark energy that is a proxy-measure! You are necessarily implying a direct relationship (e.g causality) between the universe's expansion and dark matter, so show me a transfer function.
Irrespective of your verbal tango - measuring ANYTHING is an instrumentalist point of view! Because all measurement predict at least one thing - a human experience.
You are still talking about explanation. I am still talking about prediction. A variable that is accelerating can still be described as a limit function of time. No dark energy necessary. You just have to sample a few datapoints to establish a trend.
Strawman. BECAUSE e = mcc, you can predict energy in terms of mass and mass in terms of energy. e = mcc IS the transfer function!
Predict redshift in terms of something else. Show me a transfer function.
Do I have to? You don't have a transfer function.
Overruled. Until you present a test/transfer function.