This is just too cool not to share. The short story of the life of Milton Humason. He was a mule driver who worked carrying building materials up the mountain to the new Mt. Wilson Observatory in the early 20th century. From there he was hired by the observatory as a janitor, then got promoted to night assistant. His observation skills and organization quickly gained notice and eventually he rose to become the #2 man at the observatory, behind Hubble. He developed several methods that are still used by astronomers today. And only a small accident prevented him from being the person to discover Pluto. All this from an uneducated mule driver.