A History of Us

Of course we are probably wrong about one or more things. I am fond of much research in this direction, furthering our knowledge, over the long run. All life on Earth is probably descended from some very primitive thing. These things made more of themselves, which might be the definition of life, and soon one or more of them started having two sides, like the Earthlings reading this, anytime soon. Some Earthlings think there are only two sides.