TikTok/@shelbycrenn; TikTok/@soapywheelPeople who wear ballet flats tend to fall into one of two camps: those whose shoes become sweat traps by noon, and those whose heels are perpetually dry, cracked, and in need of a pumice stone. It’s a biological divide that has recently taken over the internet, with people on Twitter and TikTok passionately identifying themselves as either “the wets” or “the dries.”In theory, the ballet flat is the definiti…