A model would not even necissarily need specific quantification of energies mass etc I guess to see if a computer model would work ..the avaialable energies etc at a point in open space would be a constant and the variable could be it ability to interact with matter and even that could be rounded off to see if such a model could produce faster star orbits for the outlying stars. I have a model in my head so to speak and "see" how an external flow would solve the faster star issue very simply and remove the need of dark matter or acknowledge that its there and it works via a push and shielding system.
I have to go now but I will come back later when I am on the boat..the 3g or next g whatever wireless works on board so I have a net link on board now..fantastic really... and being able to see google earth when considering the next port is magic..not that I have gone to another port yet...
alex
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