 then the way you would diagnose that would be to do a test to see what's your levels of dopamine. Like you'd think if dopamine is the solution, increasing dopamine, then therefore the cause would be a lack of dopamine. Like you would think that would make sense. Same thing with depression. If the cause, if the solution for depression is increasing serotonin, then why don't we do a test to see what's the serotonin levels at?