Jurassic Park is a 1990 science fiction novel written by Michael Crichton, divided into seven sections (iterations). A cautionary tale about genetic engineering, it presents the collapse of an amusement park showcasing genetically recreated dinosaurs to illustrate the mathematical concept of chaos theory and its real world implications. A sequel titled The Lost World, also written by Crichton, was published in 1995. In 1997, both novels were re-published as a single book titled Michael Crichton's Jurassic World, unrelated to the film of the same name.
In 1993, Steven Spielberg adapted the book into the blockbuster film Jurassic Park. The book's sequel, The Lost World, was also adapted by Spielberg into a film in 1997. A third film directed by Joe Johnston and released in 2001 drew several elements, themes and scenes from both books that were ultimately not utilized in either of the previous films, such as the aviary and boat scenes. A fourth entry directed by Colin Trevorrow was released on June 12, 2015.
The novel began as a screenplay Crichton wrote in 1983, about a graduate student who recreates a dinosaur. Eventually, given his reasoning that genetic research is expensive and "there is no pressing need to create a dinosaur", Crichton concluded that it would emerge from a "desire to entertain", leading to a wildlife park of extinct animals. Originally it was told from the point of view of a child, but Crichton changed it as everyone who read the draft felt it would be better if told by an adult.