"The hackers of the artificial intellegence lab did most of their programing in the lisp programing language [...] They began writing programs in lisp that were unrelated to their work in artificial intellegence. One of the things they wrote was an entire operating system [...] Hackers began to leave the artificial intellegence lab to form companies, two comanies in particular, to build the computer to run the lisp operating system [...] He spent about a year fighting back against Symbolics [...] And he quit his job at MIT to start writing a new operating system. [...] The new operating system he decided to write was based upon an old operating system [...] His new operating system was called GNU ..."