Fit the Fourth is the fourth episode or "fit" of the Primary Phase of the original radio series.

Story SummaryEdit

The episode begins with a recap of the events of the series so far, before moving to a conversation where Slartibartfast explains that mice are really "the protusions into our dimension of vast hyper-intelligent pan-dimensional beings", and that they commissioned the Earth to be built. He plays Arthur some recordings explaining the historical events. This race of pan-dimensional beings had constructed a great computer, called Deep Thought, to answer the Ultimate Question of Life, the Universe and Everything. It did, after seven million years, have the Answer to the Ultimate Question, a rather disappointing 42. Deep Thought explains that this is only disappointing because they never really understood what the Question was. They ask the computer if he can find out what the Ultimate Question is. Deep Thought cannot, but promises to design a computer that can, and names it, "Earth".

Slartibartfast explains that this computer was built by the Magratheans, and that the Vogons came and destroyed it five minutes before it was due to complete its run. The mice summon Arthur and Slartibartfast to a meeting room, where they have discussed a proposal with Zaphod, Ford and Trillian. The mice believe that as last-generation products of the computer matrix, Arthur and Trillian should be in an ideal position to find out the Question, and offer to make them "extremely rich" if they can do so. (In later versions this would be replaced with the mice wishing to extract Arthur's brain). The negotiations are interrupted by the arrival of a Galactic Police ship, pursuing Zaphod for his theft of the Heart of Gold.

The galactic police confront Arthur, Ford, Trillian and Zaphod, and shoot at them, whilst explaining that they find violence upsetting. After a particularly long volley of fire, the computer bank they are hiding behind explodes, and the episode ends.

Cast and CharactersEdit


Music featured in the fit includes:

  • "A Rainbow in Curved Air" by Terry Riley
  • "Miracles of the Gods" from In Search of Ancient Gods by Absolute Everywhere
  • "Mikrophonie I" by Stockhausen