The FINANCIAL Wondering is a series of random questions answered by Harvard experts. For the second installment, we asked David Silbersweig Stanley Cobb Professor of Psychiatry at the Medical School, co-director of the Center for the Neurosciences at Brigham and Women’s Hospital, and co-author of a 2018 paper on the neurobiological effects of music why certain songs lodge in our heads. According to University of Harvard, some surveys have found that 90 percent of people experience this phenomenon, and for about a third of them, it’s annoying. It’s known as an earworm, and it comes from theThe FINANCIAL Wondering is a series of random questions answered by Harvard experts. For the second installment, we asked David Silbersweig Stanley Cobb Professor of Psychiatry at the Medical School, co-director of the Center for the Neurosciences at Brigham and Women’s Hospital, and co-author of a 2018 paper on the neurobiological effects of ► The FINANCIAL Education