But when you consider the time period (of Pluto’s discovery), around 1930, and building up to that - 1920s, even - we're really talking about the post World War One world, the interwar period between World War One and World War Two. And this was a period where collectively, we're recovering from the trauma that World War One represented. It was the first real encounter with modern warfare, mechanized warfare, impersonal warfare, where people were living in trenches. And war was a truly mechanical experience centered around who could pump the most human bodies into a space with the most firepower at the right time. And it was an extremely dehumanizing experience. People were losing faith in government institutions, and values like patriotism that people used to cling to when fighting wars and joining up with the military. It was the first experience of how apocalyptic technology can be, and the realization that we have the ability to destroy ourselves and each other on a scale like never before.