they called it hadn't been strong enough to hold the fictional character in place"). After watching The Matrix, Gibson commented that the way that the film's creators had drawn from existing cyberpunk works was "exactly the kind of creative cultural osmosis" he had relied upon in his own writing; however, he noted that the film's Gnostic themes distinguished it from Neuromancer, and believed that The Matrix was thematically closer to the work of science fiction author Philip K. Dick, particularly Dick's speculative Exegesis. Other writers have also commented on the similarities between The Matrix and Dick's work; one example of such influence is a Philip K. Dick's 1977 conference, in which he stated: "We are living in a computer-programmed reality, and the only clue we have to it is when some variable is changed, and some alteration in our reality occurs". Philosophy In The Matrix, a copy of Jean Baudrillard's philosophical work Simulacra and Simulation, which was published in French in 1981, is visible on-screen as "the book used to conceal disks", and Morpheus quotes the phrase "desert of the real" from it. "The book was required reading" for the actors prior to filming. However, Baudrillard himself said that The Matrix misunderstands and distorts his work. Some interpreters of The Matrix mention Baudrillard's philosophy to support their claim "that the [film] is an allegory for contemporary experience in a heavily commercialized, media-driven society, especially in developed countries". "The influence of [Baudrillard] was brought to the public's attention through the writings of art historians such as Griselda Pollock and film theorists such as Heinz-Peter Schwerfel". In addition to Baudrillard, the Wachowskis were also significantly influenced by Kevin Kelly's Out of Control: The New Biology of Machines, Social Systems, and the Economic World, and Dylan Evans’s ideas on evolutionary psychology. Philosopher William Irwin suggests that the idea of the "Matrix" – a generated reality invented by malicious machines – is an allusion to Descartes' "First Meditation", and his idea of an evil demon. The Meditation hypothesizes that the perceived world might be a comprehensive illusion created to deceive us. The same premise can be found in Hilary Putnam's brain in a vat scenario proposed in the 1980s. A connection between the premise of The Matrix and Plato's Allegory of the Cave has also been suggested. The allegory is related to Plato's theory of Forms, which holds that the true essence of an