“The primary difficulty faced by multiple personalities,” Dr. Grey wrote in her preface, “is not that they are abnormal; it is that they are dysfunctional. Multiplicity, of itself, is no more problematic than left-handedness. Losing time, being unable to keep a steady job or maintain a residence, requiring detailed lists just to get through the day—these things are problems. But they are problems that a well-organized multiple household, acting cooperatively, can learn to overcome.”