It's a useful technique for coercing confessions, even confessions that aren't true.
The Japanese police do it to an extent when they arrest someone. That's a large part of the reason that the conviction/confession rate when suspects are taken into custody approaches 98/99%.
If you go long enough without sleep, you do and say strange things. If you are homeless and have no mental stimulation (apart from your other material concerns), you can quickly go mad.
It's hard to explain protracted, mindless sleep deprivation and boredom. They're connected. Paul Theroux does a good job of it in The Old Patagonian Express.
The Japanese police do it to an extent when they arrest someone. That's a large part of the reason that the conviction/confession rate when suspects are taken into custody approaches 98/99%.
If you go long enough without sleep, you do and say strange things. If you are homeless and have no mental stimulation (apart from your other material concerns), you can quickly go mad.
It's hard to explain protracted, mindless sleep deprivation and boredom. They're connected. Paul Theroux does a good job of it in The Old Patagonian Express.