Just because "brakes slow a car down" is a prediction of a simple theory of an idealized car, doesn't mean that a more complete and nuanced theory will give a d

Just because "brakes slow a car down" is a prediction of a simple theory of an idealized car, doesn't mean that a more complete and nuanced theory will give a different prediction. Furthermore, interest rate policy is basically a single lever with "up" or "down" positions. There's not a lot of room for nuance in the policy, regardless of whether the theory that recommends that policy is simple or nuanced.