"and there are a hundreds interpretations to be had from the same set of numbers on the same day for the same stock ...so many possible scenerios..."

This is absolutely right on. There are as many reasons for trades as there are people/entities making them. I disagree with your out of hand disregard for manipulation however. In as much as you state there are so many reasons other than manipulation for sp movement, you also have to allow for manipulation as the mechanism is there for it and there is precious little that exists that humans don't use when it is to their advantage. To say it isn't there is naive. It is also not simply conjecture that there is manipulation. When a seller has the opportunity to sell for a higher price but elects to sell lower, and lower below the bid... this defies logic. Yes there can be reasons for it that aren't manipulation, but to say that none of it is manipulation is more than naive.