Some more on predicting . . . using a model

The issue is not whether any specific model might be wrong: ALL MODELS ARE BY DEFINITION WRONG. They are approximations, a numerical depiction of a small portion of universe. The true question for interested statisticians, mathematicians and economists is "just how wrong are they?" This is not, as some have implied, a question of nefarious cabals or governmental conspiracies. It is simply a mathematical reality.