Purple not knowing offhand what their age would be in Earth years saves me from having to decide what impostors' lifespans are and thus what their approximate life stage numerically translates to on a Doylist level, but on a Watsonian level it's because they refuse to memorise the formula to convert between their home planet's years and Earth's, for basically the same reason that I refuse to learn how to convert Celsius temperatures into Fahrenheit or what a fluid ounce is. They've never been to Earth itself, but Earth culture dominates the circles they've spent their adult life in and they get some personal satisfaction from finding places to not give a shit about it.












