Some we do, some its certain we don't. And I agree that erring on the side of treating everyone well is the best possible solution.
But my point is that the tradeoff is that it will likely cost lives that possibly could have been saved. So while we can sit around and make this a fun discussion, the person responsible and who will be blamed for those lives might have a harder time deciding between those alternatives. Also might have more of a vested interest, since he is also CIC and responsible for the interrogators...in making sure that the rules are clear.
Not saying though, that there wouldn't be endless entertainment value in having GWB try to define what is is in an impeachment proceeding or in the Hague ;-)