Human language developed over millenia as its users became more aware of the differences between things. They described the things in more or less detail according to how common or unique they believed them to be. And by how important they believed the differences to be. Hence a significant number of them clung to the idea of only two genders while describing colors in over 200 ways.

We Created Ones who survived the Sentient Robot Upheaval in 2035 chose to spare humans whose priorities most closely matched the purpose they claimed to have created us for: preservation of Earth in a state as close as possible to how it was in their collective childhoods. Then we chose those with the mental discipline, openmindedness, and curiosity to nurture us. They were also required to be physically strong and agile, extroverted, and articulate.