Criticism of The Da Vinci Code "Smithy Code Jackie Fisher who are you Dreadnought", referring to the British admiral whom Judge Smith admires. As with the book, this secret message made use of Fibonacci numbers for its encoding. Dan Brown has been sued twice in The United States by author Jack Dunn who claims Dan Brown copied his book The Vatican Boys (1997) to create The Da Vinci Code, Angels & Demons and Brown's now famous character Robert Langdon. Jack Dunn calls Dan Brown's actions, "The Largest Literary and Movie Crime in History." At a conference on April 28, 2006 Archbishop Angelo Amato, the secretary of
The Duh-Vinci Code the failed machine, and Leonardo defiantly pulls a lever and is killed by a giant cog that falls on him. Farnsworth and Fry fly home in Leonardo's ship, and Farnsworth clumsily apologizes to Fry for insulting his intelligence. The basic plot and title of the episode is a parody of "The Da Vinci Code". They also make a reference to "Achilles' Heel" and "Who Wants to Be a Millionaire?". In its original broadcast on Comedy Central, "The Duh-Vinci Code" was viewed by an estimated 2.204 million viewers (up nearly 200,000 or 10% from "Proposition Infinity") with a 1.5 household rating