Of course they don't provide proof of anything. There is nothing there to prove. Last night there was one postulating that the likes of Einstein had help from advanced extra-terrestrials. And they are always "experts" discussing each outlandish theory. Experts on what, exactly? Unfortunately some people take them seriously. Von Danniken made millions from the huge amounts of people who bought his books. UFOs exist. Any flying object not identified is a UFO. Believing they are powered by beings who have travelled for light years is another thing.
They're historians mostly. Those shows spend half the time repeating what was already said before the break and then previewing what comes after the next one.
The next step should really be to get the mainstream public asking more. It's been cleverly streamlined into being a taboo subject that nobody wants to talk about. Instead of it being ridiculed, get people asking more questions. Demand stuff.
