Gödel was also one of four mathematicians examined in the 2008 BBC documentary entitled "Dangerous Knowledge" by David Malone. Douglas Hofstadter wrote a popular book in 1979 called to celebrate the work and ideas of Gödel, along with those of artist M. C. Escher and composer Johann Sebastian Bach. The book partly explores the ramifications of the fact that Gödel's incompleteness theorem can be applied to any Turing-complete computational system, which may include the human brain. In German:  In English:  In English translation: