Banality of Evil

Sullivan sums it up:

Many of the people who did this are mild, kind, courteous, family men and women, who somehow were able to defend slamming human beings against walls in the daytime while watching the Charlie Rose show over a glass of wine at night. We've seen this syndrome before, in other places and at other times...

These legal memos construct a form of torture, through various classic torture techniques, used separately and in combination, that were to be used systematically, by a professional torture team along the lines proposed by Charles Krauthammer, and buttressed by a small army of lawyers, psychologists and doctors - especially doctors - to turn the US into a torture state. The legal limits were designed to maximize the torture while minimizing excessive physical damage, to take prisoners to the edge while making sure, by the use of medical professionals, that they did not die and would not have permanent injuries.
The core point of this, one infers from the memos, is to create a sense among the prisoners that their assumptions about the West, the US, and countries constructed on the rule of law are without any basis whatever. The torture techniques were all the more brutal in order to push back against the reputation of the US even in the minds of Qaeda or alleged Qaeda members. What Mukasey and Hayden are arguing for today is a scheme whereby, in secret, the US government credibly allows captives to believe they are in an endless, bottomless pit of extra-legal terror. This is the state of mind they are trying to construct by torture. That's the point of the sensory deprivation, the disappearances, the sequestering from the Red Cross, the endless solitary confinement, the IRFing, the hoods, the nudity, and all the other sadism. It is precisely to persuade the barbarians that we are as bad as they are and have no limits and no qualms in doing to them whatever we want.
Looked at from a distance, the Bush administration wanted to do two things at once: to declare to the world that freedom is on the march, and huamn rights are coming to the world with American help, while simultaneously declaring to captives that the US has no interest in the law, human rights, accountability, transparency or humanity. They wanted to give hope to all the oppressed of the planet, while surgically banishing all hope from the prisoners they captured and tortured. And the only way they could pull this off is by the total secrecy they constructed and defended. So we had a public government respectful of the rule of law, and a secret government whose main goal was persuading terror suspects that there was no rule of law at all. It is hard to convey just how dangerous this was and is.