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How do torturers deal with their craft?
How is it people can torture others, be it slapping them with a phonebook, or open hand, to more evasive methods like applying electrodes to sensitive parts of the body, using belt sanders on the soles of the feet, etc. How the person administering the punishment does it, be able to eat or sleep soundly without nightmares, or block out the screams and the blood?
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