Debate about the sources of intelligence leading to bin Laden’s location has revived the question as to whether interrogational torture is effective. Answering this question is a necessary—if not sufficient—condition for any justification of interrogational torture. Given the impossibility of approaching the question empirically, I address it theoretically, asking whether the use of torture to extract information satisfies reasonable expectations about reliability of information as well as normative constraints on the frequency and intensity of torture. I find that although information from interrogational torture is unreliable, it is likely to be used frequently and harshly.

