They Physically Destroyed The Dissent

Before you buy the Bushies' latest self-defence - they had no idea what they were authorizing and had no knowledge of the techniques' history or provenance and were acting totally in good faith - you might want to read another part of former Bushie Philip Zelikow's post:

At the time, in 2005, I circulated an opposing view of the legal reasoning. My bureaucratic position, as counselor to the secretary of state, didn't entitle me to offer a legal opinion. But I felt obliged to put an alternative view in front of my colleagues at other agencies, warning them that other lawyers (and judges) might find the OLC views unsustainable. My colleagues were entitled to ignore my views. They did more than that:  The White House attempted to collect and destroy all copies of my memo. I expect that one or two are still at least in the State Department's archives.

My italics. A.L. sees the profound significance of this nugget:

The only reason to collect and destroy all copies of this memo would be in order to preserve, for as many Bush administration officials as possible, a potential defense against later prosecution. If the extent of these activities ever became public and investigations were commenced, the White House wanted to be able to argue that everyone involved relied in good faith on the advice of counsel. That defense would be severely undermined if it could be shown that these officials were warned, by a lawyer of Zelikow's caliber and rank within the administration, that the legal arguments they were relying on were poorly reasoned and unlikely to be sustained by a court.

These people were determined to torture. And torture they did.