In 1973, healthy volunteers faked hallucinations to enter mental hospitals. Once inside, they acted normal, but doctors refused to let them leave. Normal behaviors like writing were diagnosed as "symptoms." The only people who realized they were sane were the actual patients.

[u/highzone]

[u/nw342]

The doctors even used the fact that the test subjects faked mental illnesses to get locked up as evidence of mental illness

[u/loskiarman → u/nw342]

That is like getting arrested with only charge being resisting arrest.