David Gerrold is a well-known science fiction author and screenwriter who wrote the famous original Star Trek episode "The Trouble With Tribbles".

Gerrold became the head writer of Land of the Lost and developed the overall story arc and show "bible," establishing the details of the fictional world. He worked to bring in a number of other experienced science fiction writers including several who worked on Star Trek. Gerrold's involvement with the show ended after the first season.

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