Second, in clinical practice, one often sees such patients having been managed with sequential medication trials and polypharmacy lasting over many years. ECT is not, of course, a substitute for the most important factor in treatment, which is a consistent, supportive, and skilled therapist. But if this most powerful biomedical treatment for depression fails, then the failure may help provide critical guidance to future therapy by discouraging the ongoing pursuit of an ultimate biological "magic bullet" that might yet make the patient feel better. To resolve such an issue, in selected cases, may give the therapist and patient more freedom to focus on other problems and may be well worth the effort and expense of ECT.