sensenbender (imported) wrote: Fri Jul 30, 2010 11:25 pm Disagree. Gallileo's postulate was that his balls would land together regardless of unequal size. His theory was that gravitational force was a constant for bodies of all sizes. His data, which followed his formulation of his theory was gathered from his experiment of dropping his balls. You can have a theory X that postulates results Y, proven (or strongly supported) by data Z gathered from experiment A.
While it's true that data already observed often leads to a theory that attempts to 'explain' or 'unify' the observed data, it is equally and perhaps more often true, that a theory is first formulated according to mere observations, not data points, that lead to experiments that produce data that support or refute the theory.
So I still say, first the theory than the data, and in any case, do not 'have it backwards'. So there!
Again, you confuse postulate with theory.