Rarity nodded in understanding. Atchmon had so many questions about cutie marks, some of which never even occurred to her. Which, in turn, allowed her to learn about typical human development. It wasn't much different from ponies when they're in search of their destiny. That's why it was so important to find early on, it was not only a symbol of one's maturity, but nopony wants to be left with a cutie mark they didn't fully understand, and be stuck bumbling their way through life. Everypony, no matter what world they're from, is always in such a hurry to grow up.