A lot of what is being presented in this series I had no idea was going on. I was in junior high in the 60's. A lot of information that was new to me right up to the end. I watched at least two if not three parts at a time. Giving me time to think about what I had heard and processing the information. It has a lot of older interviews which I actually enjoyed. It has me thinking about other things in our world and in our lives that can't be explained. I am so glad I watched this because, even being older film viewed in it, it still had a lot to tell that does not change over time. Give it a try and see if it is worth the time for you to view. So glad I did!