An interesting report that came out today. I'll let you judge it for yourselves
http://www.cnsnews.com/public/conten...x?RsrcID=46949
The point of the report (gleaned from information release about the CIA by the Obama administration) is that Khalid Sheik Mohammed was waterboarded. The result was that he revealed information about a planned 9/11 style attack on Los Angeles and the location of the cell that was suppose to carry out the attack. This information led to the cell's leader being captured and the thwarting of this planned attack.
This is very much "means v outcome" question. The means was waterboarding an Al Qaeda top official versus the outcome of thwarting a second 9/11 attack on Los Angeles.