A lot of words and clauses in this one sentence, but let's try to parse them. But the Texas Department of Public Safety is remarkably accurate, sometimes exactly on the mark, in its predictions of the number of deaths that will occur on Texas highways over upcoming holiday weekends.
Weather forecasting is become more and more accurate.
Voter sampling is yielding ever more accurate predictions of the outcome of elections. It also relates to how the human actually thinks, as expressed in the Inclusive Logistic Progression. This is the ergodic axiom, and it has no scientific validity. Without speaking for Friedman or his acolytes, I think what you have done is set up a straw man argument. Something like what Mr. Legge describes as the ergodic axiom is indeed probably in the back of the minds of command economy central planners, who believe that some sort of Leontiefian computer program can efficiently plan everything, in the absence of a market pricing system.