The Hitchhiker's Guide to the Galaxy Primary and Secondary Phases archaic term for a section of a poem revived by Lewis Carroll for "The Hunting of the Snark"). The original series comprised Fit the First to Fit the Sixth. Fits the Fifth and Sixth were co-written by John Lloyd; subsequent versions of the story omit most of Lloyd's material. The success of the series encouraged Adams to adapt it into a novel, which was based on the first four Fits and released in the second week of October 1979. A slightly contracted double LP re-recording of the first four Fits was released in the same year, followed by a single
Lewis Carroll early version of what today is known as Scrabble. He appears to have invented – or at least certainly popularized – the "doublet" (see word ladder), a form of brain-teaser that is still popular today, changing one word into another by altering one letter at a time, each successive change always resulting in a genuine word. For instance, CAT is transformed into DOG by the following steps: CAT, COT, DOT, DOG. The games and puzzles of Lewis Carroll were the subject of Martin Gardner's March 1960 Mathematical Games column in Scientific American. Other items include a rule for finding the