SCHALER: Thank you, Tom. Well, right off the bat I see we disagree. And I see that our opponents are already confusing diseases with behaviors. Now, depression most certainly is not a disease, because depression is a word that we use to describe activity, and activities are behaviors based in values. They aren't physical, they are ways of moving in the world. Now, if by a disease you mean something physiological, if you have a particular way of deciding that a person's brain is not producing enough serotonin, for example, or uptaking enough, or there's a problem in uptake or transmission of serotonin, then perhaps what you've discovered and outlined would qualify as a bona fide disease. In that case, though, you don't rely primarily on activity or symptoms, I beg to differ, a diagnosis is not made on the basis of a cluster of symptoms, it is made on the basis of a cluster of signs. And when we talk about signs in medicine we are talking about physiological lesions, neurochemical imbalances, etc. Depression is not found in a corpse at autopsy, because depression does not refer to anything physiological, it refers to how a person conducts himself, or moves in the world. Thank you.