Now suppose instead of engaging Klinghoffer on what Hitler really said and what Darwinism is really about, I had used the Overton Window concept, and tried to find people who don’t believe in evolution doing super-crazy things that make even Hitler look even more unacceptable (?!) if that is even possible.

Well, then all his objections would go unanswered. He could rightly point out that I am ignoring facts and talking only about unrelated issues and motivations.

And I would be guilty of the very thing that he’s been doing all along, so I wouldn’t come out better than him, and I’d have given him the ground on the facts.