https://github.com/davepinch/pinchy.cc/blob/master/content/fragments/what-are-the-odds-that-you-are-reading-this.md
Pratchett even says in The Art of Discworld that he has received a number of letters from terminally ill fans in which they hope that Death will resemble the Discworld incarnation (he also says that those particular letters usually cause him to spend some time staring at the wall).