Rush posed that question some time back. What if everything you know is wrong?
There were no classified documents on Hillary's server, most of us will not believe that but what will future generations know about that from official recorded history? History also records scientific advances/discoveries some of them may even be recorded accurately, many won't be. I suppose most truth will eventually out, but not always. In reality Truth is always what we perceive it to be, new truths come about when new facts change our perception, that is the reality of perception.
Remember those evil Krauts and Nips that we had to change our perception of, in order to easily accept the massive killing that brought the war's end?
