As a reader, I find non-fiction as compelling as fiction. However, non-fiction becomes a minefield when polarising conflicts are thrown in. Biographies and autobiographies are usually straightforward affairs in which history has as much a big part to play as character. Memoirs or real-life-based accounts, however, are a different kettle of fish. I was reminded of their complex nature recently after reading a diary entry by the Libyan-American writer, Hisham Matar, in the London Review of Books.