Ethiopians are clearly very smart people. Take that white supremacists!

Ancient Romans just loved convoluted systems, which were later inherited by the rest of Europe. The French revolution fixed most of that mess by simplifying it and getting rid of the quirky designs. They also tried to fix time units and the calendar, but that just didn’t stick for some reason. Meanwhile, Ethiopians were already using a sensible calendar that has a good way to mitigate the messy properties of Earth.