Solitary confinement is a very controversial form of imprisonment in which the prisoner has no contact with others with the exception of occasional interaction with the prison staff. Solitary confinement was invented in 1829 when prisoners where left alone in order to seek forgiveness from God.
People that undergo solitary confinement often go, to some degree, insane. Not being able to speak, sometimes not knowing who they are, panicking, and coming down with severe depression. But why?
Humans are extraordinarily social people, and when you take someone away from that, they begin to lose social skills (communication, picking up on social hints). Us humans rely heavily on each other for information also. If an inmate starts to hallucinate and sees a man next to him, he has no one to confirm his thoughts, so, in his mind, the man is really there. Taking away windows and denying any clue to what time of day it is can lead to sleep deprivation.
So, it is perfectly human to go insane due to solitary confinement.
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