Crazy or not
My friend who is a psychologist and who is employed by the court system, tells me that the word "insane", or any equivalent word or term, has no medical meaning -- it is a legal term only, which differs from place to place, and from time to time, as to exactly what constitutes "insanity". In medical terms, the whole concept of mental illness vs. mental health, normality vs. aberration (basically a statistical condition) etc. is a very large and complicated affair with, often, no fixed boundaries or norms.