How do you know it’s real? When one is in a straitjacket for a long time, the trauma might make the mind disassociate from the body, giving an illusion of freed

How do you know it’s real? When one is in a straitjacket for a long time, the trauma might make the mind disassociate from the body, giving an illusion of freedom. The brain is essentially dreaming it’s escaped while the body is still programming in Java.