I support torture as a last resort method of extracting information from terrorists....in theory. I just have these few questions that need to be answered, first:
1st Question: What is a terrorist? How do we define what kind of person deserves this brutal method of interrogation? The term "terrorist" can mean different things to different people, meaning that the definition of who "should" be tortured changes based upon who is in charge of the interrogations. Not really a good standard of judgement, in my opinion.
2nd Question: What is the downside of NOT getting the information that the terrorist is hiding? If the person being tortured is hiding the secret code to shut down a bomb that will destroy downtown NYC, does that make the torture OK, but if he's hiding the names of fellow terrorists, it's not OK? What if one of those fellow terrorists has the secret code?
3rd Question (and this one's the doozy): If someone is willing to lie about who they are, (ie, terrorists don't walk down the street proclaiming their hatred of [insert target people here] because otherwise THEY WOULD BE CAUGHT!) then what surety do we have that torturing them will produce true information? Hypothetically, let's assume that we have a terrorist in custody, he does have that secret code, and NYC is gonna go boom. Let's further assume that whoever makes the decisions decides that torture is right and necessary because there isn't enough time left to wait on other methods. What assurance do we have that once we start torturing the SOB he'll tell us the correct code to shut off the bomb? Since he's a terrorist who, presumably, wasn't walking down the street saying "Death to all [again insert target here]!", he (or she, I suppose - women can be terrorists too, but that's another thread), then he is already a documented LIAR. Who's to say that he won't tell us the first code that comes to mind DIFFERENT than the correct one, and then when we put it in, NYC goes boom. We know that people under torture lie. Not always, but it happens. How do we know if we are hearing the truth or not when the source is already certifiably FALSE. "Oh, he lied about anything and everything to get here and kill us, but now we know he's telling the truth."
The problem with torture is that we have no way to GUARANTEE that a) the subject is truly and OBJECTIVELY a terrorist, b) the information is worth the expense of deliberately causing pain to another human being (Because let's not forget - these are human beings, not some subhuman, alien, degenerate....thing. I'm sure none of us believes of ourselves that we would enjoy causing pain to another being, even if said being deserved it or it was TRULY, COMPLETELY necessary to prevent greater pain/suffering to other beings), and finally c) (the big one) we have no way of knowing until after the information is used whether the words of a KNOWN LIAR are the truth!
Torture is all well and good in the theoretical world of evil SOBs who want to kill us all, but in the real world, the ends do not justify the means because there is no way to know if the ends will really be what we think they are.