Did anyone else think the estimations for the number of metalborn were ridiculously low? One in a thousand people is a misting? And even less are ferrings? For one thing, I feel like ferrings should be the more common of the two, since a fifth of the people who survived the Catacendre were Terris. Mistings at the one in a thousand rate seems like it should be during the final empire, when only half the metals were known, snapping was harder, and nobles and skaa couldn't intermarry. We even saw that more than one in a thousand were mistings when preservation snapped skaa at the end of HoA, and skaa weren't even supposed to have allomancy then!