Even IF the attack on Osama BL had been 100% due to torturing prisoners, it would not mean a vindication of the torture cheerleaders. Why? 1) It is only a colossal failure of the imagination to think that any action is the result of one and only one course of action. There are always other ways. 2) What price can we put on our national integrity? As John McCain said once: it is not about them, it is about us.
Source for McCain (WaPo article 2005):