Yes and no. In the case of somebody who has information waterboarding is generally an &#x27;efficient&#x27; strategy. i.e. you have the guy you know hid the bomb somewhere in manhattan.<p>It&#x27;s just very hard to tell when somebody doesn&#x27;t know anything. And they will start making up information to make it stop. i.e. 10 guys and you have reason to believe one of them may have hidden a bomb somewhere.