Scientific medicine is difficult and expensive. I worry that the apparent success of CBT may be because methodological compromises needed to make the research practical happen to flatter CBT more than they flatter other approaches.

I might be worrying about the wrong thing. Do we know anything about the usefulness of Prozac in treating depression? Since we turn a blind eye to the unblinding of all our studies by the sexual side-effects of Prozac, and also refuse to consider the direct impact of those side-effects it could be argued that we don't actually have any scientific knowledge of the effectiveness of the drug.