otherwise we would not make progress in basically all sciences Other than physics, chemistry and, to some extent, biology, how sure are we that we have made pr

otherwise we would not make progress in basically all sciences Other than physics, chemistry and, to some extent, biology, how sure are we that we have made progress? Can we say that the CBT-psychologists of today are any closer to a theory of human cognition than their Freudian predecessors? Can we say that modern dynamic general stochastic equilibria theories of macroeconomics do better at predicting long-term economic trends than the Keynesian models that preceded them? Even in physics, we seem to be spinning our wheels, building larger and larger particle accelerators while waiting for a theoretical breakthrough that never seems to come.