Alan Turing and the philosopher John Searle as presenting relevant models of testing artificial intelligence known as the Turing test and the Chinese Room Thought Experiment, respectively, in the chapter titled "What's Wrong with Building Replicants," which has been a recurring theme for many of Scott's films. The chapter titled "Artificial Intelligence in Blade Runner, Alien, and Prometheus," concludes by citing the writings of John Stuart Mill in the context of Scott's Nexus-6 Replicants in Blade Runner (Rutger Hauer), the android Ash (Ian Holm) in Alien, and the android David 8 (Michael Fassbender) in Prometheus, where Mill is applied to assert that measures and tests of intelligence must also assess actions and moral behaviour in androids to effectively address the themes which Scott explores in these films.DVD format and director's cut''' Scott is known for his enthusiasm for the DVD format, providing audio commentaries and interviews for all his films where possible. In the July 2006 issue of Total Film magazine, he stated: "After all the work we go through, to have it run in the cinema and then disappear forever is a great pity. To give the film added life is really cool for both those who missed it and those who really loved it." Running alongside his enthusiasm for DVD, Scott is known for his use of the director's cut. The positive reaction to the Blade Runner Director's Cut encouraged Scott to re-cut several movies that were a disappointment at the time of their release (including Legend and Kingdom of Heaven), which have been met with great acclaim. Today the practice of alternative cuts is more commonplace, though often as a way to make a film stand out in the DVD marketplace by adding new material. Filmography Awards and honours Scott was appointed Knight Bachelor in the 2003 New Year Honours for services to the British film industry. He received his accolade from Queen Elizabeth II at an investiture ceremony at Buckingham Palace on 8 July 2003. Scott admitted feeling "stunned and truly humbled" after the ceremony, saying, "As a boy growing up in South Shields, I could never have imagined that I would receive such a special recognition. I am truly humbled to receive this treasured award and believe it also further recognises the excellence of the British film industry." He has been nominated for three Academy Awards for Directing—Thelma & Louise, Gladiator and Black Hawk Down—as