I'd probably give this a higher review- six or maybe a seven-if not for one thing: ALL the ten stars reviews here are by people who have never written a review on IMDb before. This often means that someone had people log on and write ten star reviews to boost the film's rating and credibility. There are two reviews that don't fit this description, the authors of which gave the film an eight and a nine respectively. These are worth reading. Another person gave it four stars. I do think it deserves better than that, but at least I know this opinion came from someone not associated with the film. [BTW, I'd issue the same warning about films that receive a lot of one star reviews from people who haven't reviewed anything else. This can often be enemy action.] As for my own opinion, I think the film has some very good aspects. It's always fun to watch magicians at work, and some of the history is interesting. But the film's main claim is based on too much supposition to be of any value in academic history circles. Correlation does not imply causation, as the saying goes. The film is well put together and not a total waste of time, but take everything it says with a grain of salt.