Andrew Jackson "Slipstick" Libby is a fictional character featured in the "Future History" series of science fiction novels by Robert A. Heinlein. He is an enormously talented and intuitive mathematician, but received little formal education. His talent was first appreciated in the short story Misfit, where he helps guide an asteroid into the correct orbit after the guidance computer has failed.
In later stories he changes sex to become Elizabeth Andrew Jackson Libby.
"Misfit" is a science fiction short story by American writer Robert A. Heinlein. It was originally titled "Cosmic Construction Corps" before being renamed by the editor John W. Campbell. and published in the November 1939 issue of Astounding Science Fiction. One of the earliest of Heinlein's Future History stories, it was later included in the collections Revolt in 2100 and The Past Through Tomorrow.Variable Star
For the astronomical object, see Variable star.Variable Star is a 2006 science fiction novel by American author Spider Robinson, based on the surviving seven pages of an eight-page 1955 novel outline by the late Robert A. Heinlein († 1988). The book is set in a divergent offshoot of Heinlein's Future History and contains many references to works by Heinlein and other authors. It describes the coming of age of a young musician who signs on to the crew of a starship as a way of escaping from a failed romance. Robinson posted a note on his website in 2009 noting that his agent had sold a trilogy of sequels based on the novel and its characters.