The information contained within these video's in my mind that there is irrefutable evidence of a history that has been suppressed by goverment and institutions such as the Smithsonian. Revealing such history and archeological discoveries would change our entire world view, just as Columbus did.
My guess is that most people did not know any of these archeological finds existed right here in the United States.
You'll note on this first video from TED, that the gentleman is nervous. Understandably so considering the information he has discovered.