I took two in high school, one as part of a diploma program years back, and then another in college. There's fields within it that are useful, but there's just so much retarded pseudosciency aspects that seem more like the philosophy of how things work vs how they actually work-- since those fields rely more on what a patient tells you, and then deductive reasoning from there. It's two points of possible fallacy from not only the patient, but who is actually doing the observances and their own reliability, ability to maintain objectivity, etc.