Douglas Adams sent Ford Prefect to Earth as a researcher for the Hitchhiker's Guide to the Galaxy, the most popular publication in the known universe. Ford was supposed to stay a week. He stayed fifteen years, during which time he researched the entire planet and produced an entry that read, in its original form, two words: Mostly Harmless. The editors later revised this to Harmless, which Ford considered a significant loss of nuance.

Ford Prefect is not human. He is from a small planet in the vicinity of Betelgeuse, and he chose his Earth name by misunderstanding which species was dominant on the planet. He believed that cars were the intelligent life forms and named himself after a popular model. This mistake establishes Ford's approach to research: he is enthusiastic, confident, and fundamentally wrong about almost everything at the detail level while being approximately correct at the cosmic one.

The Towel and the Philosophy

The Hitchhiker's Guide to the Galaxy states that a towel is the most massively useful thing a hitchhiker can have. Ford takes this seriously. He carries his towel everywhere, and the commitment to towel-readiness is both a joke and a genuine survival strategy. Dr. Kevin Schilbrack of Appalachian State University, in his study of Adams's philosophical comedy, has argued that the towel functions as a symbol of preparedness in a universe that cannot be prepared for, a small act of control in a cosmos defined by its indifference.

Ford's relationship with Arthur Dent is the anchor of the series. Arthur is bewildered by everything. Ford is bewildered by nothing, or at least performs unflappability with such commitment that the distinction is academic. Ford drinks when things go wrong, which is always. He approaches danger with the relaxed curiosity of someone who has hitchhiked through enough of the galaxy to know that panic is understandable but unhelpful.

The Guide and the Researcher

Ford's job is to document reality and compress it into entries that travelers can use. The irony of his Earth assignment is that fifteen years of immersion in human culture produced two words, which is either an indictment of Earth's interest level or a reflection of the Guide's editorial standards. Adams uses Ford to make a point about observation: the quality of your documentation depends entirely on what you think is worth documenting, and Ford, a galactic hitchhiker, simply did not find Earth remarkable enough to warrant more than a footnote.