If you allow the torture of a man you know is guilty to save 10 lives, it might be seen as something positive. But the next step will be the torture of a man who is probably guilty. And later you will torture a man who you think knows somebody who knows somebody who has information about something. What I'm trying to say is this: If you allow torture for one thing, anything, boundaries get blurry, and torture becomes an acceptable interrogation method or even a punishment. If you want to live in a civilized society you can never allow torture. Ever!