It is a bit odd to lump so many different sorts of writing under "nonfiction": history, mathematics, philosophy, biology, ... Having said that, one comes to bo

It is a bit odd to lump so many different sorts of writing under "nonfiction": history, mathematics, philosophy, biology, ... Having said that, one comes to books marked "fiction" with very different expectations. People have always found Ford Maddox Ford's reminiscences uncomfortable because he made so much stuff up. One does not expect a memoir to have minute accuracy--much is necessarily omitted. But there is a difference between leaving things out and shifting emphases and making up incidents that never happened.