> So you are just going to ignore the vast majority of the history of medicine?
No, quite the contrary -- in fact I just defined the difference between medicine and psychology. Medicine identifies new diseases using evidence. Psychology identifies new diseases using votes. All the new "diseases" in DSM-5 were added by a panel voting in secret.
> Medicine, and science in general, is constantly re-evaluating and often finding they were wrong.
Yes, using science and falsifiability (a hallmark of all scientific ideas) to identify the wrong ideas. Psychology, by contrast, identifies wrong ideas by measuring public reactions to their imaginary diseases. Asperger's wasn't voted out because it's fiction -- most psychological diseases are fiction. It was voted out because it produced an epidemic of phony diagnoses and a public relations disaster.
> Or do you regularly check up on your humor levels?
It's not easy to find humor in stories where psychology gets it wrong and kills children.
http://en.wikipedia.org/wiki/Rebecca_Riley
Quote: "Rebecca Riley ..., the daughter of Michael and Carolyn Riley and resident of Hull, Massachusetts, was found dead in her home after prolonged exposure to various medications, her lungs filled with fluid. The medical examiner's office determined the girl died from "intoxication due to the combined effects" of prescription drugs. ... The Riley parents were unemployed and the family relied on Social Security Benefits. From the age of two, Rebecca was diagnosed with ADHD and bipolar disorder, mainly on the basis of information given by her mother to child psychiatrist Kayoko Kifuji from the Tufts-New England Medical Center. "
http://en.wikipedia.org/wiki/Attachment_therapy
Quote: "Since the 1990s there have been a number of prosecutions for deaths or serious maltreatment of children at the hands of "attachment therapists" or parents following their instructions."