Fairy tale is a lie according to Pushkin's creative perception

The well-known final of Pushkin’s “Fairy tale of the Golden Cockerel” (crossed out by a censor) contained an unconventional statement: “The tale’s a lie, but it’s got a hint! For a good pal it’s a tip”. What was it for a “hint” that was a “fairy tale’s” conclusion, that the author was referring to? And why was the tale itself defined as a lie ? In Pushkin’s language use a fairy tale (something that is told and then written down) is peculiar as it is obviously a fable and that is esthetically important. The fairy tale principle invented by the author provided the basis for the very “fables”, one could “pour tears over”. That very principle made the author perceive any event he described particularly vividly. This article gives several examples of Pushkin’s treating the events he wrote about as a “fairy tale”.