The film is well mounted with historical detail, the only reason I gave it 5 stars. The film doesn't follow chronology of events ie. Franklin Leonard Pope, one of Edison's partners, electrocuted himself in 1895 then immediately the film goes back to 1890 and the first electrocution of murderer William Kemmler. Thats a no no, keep true historical things in the manner that they happened. The film sneaks in another misconception. Edison was going to use dc current to execute horses/animals and the film immediately shows montage experimental film frames by yet another inventor Edweard Muybridge which were shot in the early 1880s. This is not accurate for Edison had nothing to do with Muybridge's experiments though his foray into inventing a movie process came later in the 1880s. English actors are sometimes chosen to portray Americans because of their clear and precise diction though Benedict Cumberbatch looks nor sounds nothing like the real Thomas Edison. Newsreel footage exists of Edison at the end of his life. Edison and his factory actually did invent the lightbulb. Edison had worked out the process, Louis Latimer had found a filament that would burn adequately. The film seems to want to short change Edison in anything he did which is inaccurate. Edison had on file with the patent office hundreds of patents which were not financially successful. One was a pin for babies diapers, perhaps the main way for fastening diapers until velcro. Another invention usually credited totally to Edison is the movie camera or Kinetoscope. Edison wasn't the first to develop movement as related to film, but he (more specifically his employee WKL Dickson) came up with a process, the Kinetoscope/Kinetograph, that allowed it to be exploited commercially. The other two men of whom this picture centers on, George Westinghouse was already an established and wealthy man having invented a railroad brake in the 1860s and Nicola Tesla was a great idea man who unfortunately didn't have the funds to make his own process or other inventions materialize. Tesla even came up with a great plan in the early 1900s to send FREE electricity to the masses like radio waves. He built a large complex in New York called Wardenclyffe but it was shot down by lack of financier interest and politicians. What a still great idea which could be compared to solar energy today, FREE ELECTRICITY FOR EVERYONE . Tesla was a brilliant auto-didactic who had no money or involvement with money men to make his inventions come true. But I digress, all of these mens stories should be told separately so that the full breath of their lives and accomplishments can be more accurately detailed. A movie like this just gets you thinking, which accounts for all the Edison bashing. Theres more to all three mens lives than what we have here.