criminal or corrupt activity which puts them at risk personally and means that what it is likely that attempts may be made to attack or suppress what they write. An example is Bob Woodward, a journalist who investigated and wrote about criminal activities by the US President. Memoirist Writers of memoirs produce accounts from the memories of their own lives, which are considered unusual, important, or scandalous enough to be of interest to general readers. Although meant to be factual, readers are alerted to the likelihood of some inaccuracies or bias towards an idiosyncratic perception by the choice of genre. A memoir, for example, is allowed to have a much more selective set of experiences than an autobiography which is expected to be more complete and make a greater attempt at balance. Well-known memoirists include Frances Vane, Viscountess Vane, and Giacomo Casanova. Utilitarian Ghostwriter Ghostwriters write for, or in the style of, someone else so the credit goes to the person on whose behalf the writing is done. Letter writer Writers of letters use a reliable form of transmission of messages between individuals, and surviving sets of letters provide insight into the motivations, cultural contexts, and events in the lives of their writers. Peter Abelard (1079–1142), philosopher, logician, and theologian is known not only for the heresy contained in some of his work, and the punishment of having to burn his own book, but also for the letters he wrote to Héloïse d'Argenteuil . The letters (or epistles) of Paul the Apostle were so influential that over the two thousand years of Christian history, Paul became "second only to Jesus in influence and the amount of discussion and interpretation generated". Report writer Report writers are people who gather information, organise and document it so that it can be presented to some person or authority in a position to use it as the basis of a decision. Well-written reports influence policies as well as decisions. For example, Florence Nightingale (1820–1910) wrote reports that were intended to effect administrative reform in matters concerning health in the army. She documented her experience in the Crimean War and showed her determination to see improvements: "...after six months of incredible industry she had put together and written with her own hand her Notes affecting the Health, Efficiency and Hospital Administration of the British Army. This extraordinary composition, filling more than eight hundred closely printed pages,