Guide is definitive. Reality is frequently inaccurate
This has led to some interesting consequences. For instance, when the editors of the Guide were sued by the families of those who had died as a result of taking the entry on the planet Traal literally (it said “Ravenous Bugblatter Beasts often make a very good meal for visiting tourists” instead of “Ravenous Bugblatter Beasts often make a very good meal of visiting tourists”), they claimed that the first version of the sentence was the more aesthetically pleasing, summoned a qualified poet to testify under oath that beauty was truth, truth beauty and hoped thereby to prove that the guilty party in this case was Life itself for failing to be either beautiful or true. The judges concurred, and in a moving speech held that Life itself was in contempt of court, and duly confiscated it from all those there present before going off to enjoy a pleasant evening’s ultragolf.
The Restaurant at the End of the Universe (Hitchhiker’s Guide to the Galaxy Book 2)