Steve Cloves and David Yates missed the whole point of the story in their adaptation of Half Blood Prince. They chose to focus on the minor themes instead of on the major ones. The title should have told them one of the themes which was the Half Blood Prince, another was to learn more about Lord Voldemort, both of these fell terribly short. One of the reasons this series is so universal is because the characters so well developed. In my opinion the story the screenwriter and director chose to tell was off the mark.