Today I want to explore a basic question: Is there such a thing as a test for a brain-based chemical imbalance?  Sounds simple enough but as you'll soon see there is nothing simple about the question.  And this is mainly because there is currently a debate raging about the matter, and there seems to be no clear cut answer. Given the monstrous size of this issue it is mind bending that after sending people to the moon (and back), creating weapons of apocalyptic destruction, and the flowbee, that absolutely no one has a firm handle on what