When I was in elementary school, in the 1980's teacher's used to use film projectors so they would put the, they'd put the film reels on the projector and it always took them a long time. It seems like there were always technical difficulties, just like people using powerpoint presentations today. It always takes, it always takes hours to set up, and it was always fun for us when we were in school because we would get a, get a break from studying, and we would get to watch a movie, but they would usually turn off all of the lights, and for us kids, having the lights off meant, meant bedtime, so I can remember, it was, even though it was exciting, it was always very hard to keep my eyes open and I would end up falling asleep before the end of the movie.