The blindness of Chamberlain and Halifax and Henderson is not at all like Puzzle Number One, from the previous chapter. That was about the inability of otherwise intelligent and dedicated people to understand when they are being deceived. This is a situation where some people were deceived by Hitler and others were not. And the puzzle is that the group who were deceived are the ones you’d expect not to be, while those who saw the truth are the ones you’d think would be deceived.