Earlier quoted context omitted.
>patient self-survey is just as objective as any other test. Subjective: based on or influenced by personal feelings, tastes, or opinions. Objective: (of a person or their judgment) not influenced by personal feelings or opinions in considering and representing facts.
What is the difference between being depressed and "feeling" depressed? What is the difference between being schizophrenic and having the "opinion" that Satan speaks to you through your neighbor's cat? Mental illness is defined by what a person feels and believes. What you feel and believe is subjective but you can objectively establish that a particular cluster of subjective feelings and beliefs is abnormal vis-a-vi…
How do you objectively verify "manic"? You can track hours slept. No one fakes sleeping two hours a day for a month while having, say, good motor skills in the daytime.
This matters because recurring brief hospitalization is necessary for some people to get back on their axis. This is NOT "sanity days" or "mental healing", it's a clear cut medical issue.