http://www.slate.com/articles/health_and_science/human_nature/2013/01/the_case_for_torture_ex_cia_officials_explain_enhanced_interrogations.html
'Hayden acknowledged that prisoners might say anything to stop their suffering. (Like the other panelists, he insisted EITs weren't torture.) That's why "we never asked anybody anything we didn't know the answer to, while they were undergoing the enhanced interrogation techniques. The techniques were not designed to elicit truth in the moment." Instead, EITs were used in a controlled setting, in which interrogators knew the answers and could be sure they were inflicting misery only when the prisoner said something false. The point was to create an illusion of godlike omniscience and omnipotence so that the prisoner would infer, falsely, that his captors always knew when he was lying or withholding information.'