If one day you are forcibly taken to the mental hospital, how can you prove that you are not mentally ill?

If one day, unfortunately, you are mistaken for a mentally ill person and forcibly taken to a psychiatric hospital, what methods would you use to prove that you are sane?

Not long ago, a journalist named Gray Beck went to Italy to interview three special individuals. The story is as follows: A driver responsible for transporting psychiatric patients made a mistake and allowed three patients to escape along the way. To avoid losing his job, he drove to a bus station and promised free rides. Finally, he passed off three passengers as patients and took them to the hospital.

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I saw the incident above several years ago in a post collecting the world's strangest and funniest news stories. Now, here's the original text:

A Zimbabwean driver was found drinking at an illegal bar, only to discover that all 20 psychiatric patients on his bus had escaped, and he was supposed to deliver them to the Bulawayo Psychiatric Hospital. Afraid of being criticized by his boss for his negligence, the driver drove to a nearby bus station and offered free rides to each passenger. He delivered these passengers to the psychiatric hospital and told the hospital staff that these "patients" were easily agitated, rambled, and suffered from hallucinations — this trick wasn't discovered until three days later.

The specific time isn't pursued, but the characters, locations, and quantities don't quite match up, so we won't dwell on it.

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Gray Beck was not interested in this story itself; he wanted to know how these three people proved themselves and successfully left the psychiatric hospital.

Below is an interview with Person A: