In "Lyra's Oxford" by Philip Pullman, a character named Mr. Makepeace discusses the idea of turning lead into gold, a metaphor for deception and misdirection. He explains that while the actual transmutation is impossible, the belief that one might attempt such a feat serves a purpose. By making others think he is engaged in a futile endeavor, he successfully distracts them from his true activities.
This clever ruse allows him to operate without interference, as those around him are preoccupied with the absurdity of the situation. It highlights the theme of perception versus reality, suggesting that sometimes disguise and illusion can be effective tools for achieving one's goals without unwanted scrutiny.