This is perceptual bias. It's a means of only seeing what we are already convinced of. It tells us that those who agree with our assumptions are right there in the proof we accept (while we disregard the proof that disagrees with us).
Anyway, this is not about that.
This is a blog post about how everything is everything no matter which age or what vantage point, except that it doesn't look that way to anyone who believes this to be untrue.