Well, it may require some heavy thinking to understand some points about if past had plays or not, but it's nothing abstract. I know some people would have a problem with this, but there are also a lot of other things and facts you have to accept no matter what you think about it. But some lies repeated milions of times may look like truth, if everybody around accept it. It's called peer preasure.
What's the year you've been born (and are you pretty sure you've been born)? What's the first thing you remember?