Simultaneously, an inordinate amount of energy is spent deciding whether a depression is unipolar or bipolar depression-- and medication selections vary considerably depending on how you decide.
The treatment of depression hasn't stagnated because of a lack of study; there are easily ten psychiatric journals packed to the covers every month with antidepressant studies and commentary. It has stagnated because we are asking the same questions, and finding the same answers, over and over. Friedman did it, too, in his commentary: he asked an interesting question, but answered the usual one.

