Some of the strangest passages in the film are the interviews with the officials who were running the camps and making the “Final Solution” work smoothly and efficiently. None of them, at least by their testimony, seem to have witnessed the whole picture. They only participated in a small part of it, doing their little jobs in their little corners. If they are to be believed, they didn’t personally kill anybody, they just did small portions of larger tasks, and somehow all of the tasks, when added up and completed, resulted in people dying.