Schadenfreude is a feeling of pleasure that occurs to some people when they find out that someone else is hurting. Feeling pleasure, even joy, when seeing someone else fail, flounder or fall victim has to be one of the most unsettling (and repulsive) concepts—but it isn’t rare and it’s gaining acceptance. According to some studies, it is “normal.” “A lack of empathy is not always pathological,” said Mina Cikara, who conducted the study with Professor…