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Douglas Adams did not invent humorous science fiction, but his synthesis of humor and humanity in the Hitchhiker's Guide stands in sharp contrast to some of the harder sci-fi efforts of the 20th century. Arthur C. Clarke might have invented humorous sci-fi in his short story Reunion, but that's another topic (and maybe too hard for towers of ilium).

For the moment, the new Blade Runner movie is being added to the towers of ilium official list of architecture movies. It should be noted that this list, despite being official, is not archived in an organized way. Maybe that is the answer.