Why are we the way we are?

Are we really so much smarter than people in the Middle Ages because we think that the Earth turns around the Sun?

You see what your knowledge tells you you're seeing.

What you think the Universe is and how you react to that in everything you do depends on what you know. And when that knowledge changes, for you, the Universe changes.

We all are what we all know today.

A very interesting series of historic events and what changes the Universe.