TARDIS tight schedule, which led to Brachacki leaving the show due to disagreements with the production team and possibly a feeling that he had been given an impossible task. Despite his leaving the show and mixed reactions as to how the set looked (producer Verity Lambert liked it but director Waris Hussein did not), the basic design of the hexagonal console and wall roundels has persisted to the present day. In the Third Doctor serial "The Time Monster" (1972), the console room of the TARDIS was dramatically altered, including the wall roundels. This new set, designed by Tim Gleeson, was disliked
Blue wall of silence Blue wall of silence The blue wall of silence, also blue code and blue shield, are terms used in the United States to denote the informal rule that purportedly exists among police officers not to report on a colleague's errors, misconducts, or crimes, including police brutality. If questioned about an incident of alleged misconduct involving another officer ("e.g.," during the course of an official inquiry), while following the code, the officer being questioned would claim ignorance of another officer's wrongdoing or claim to have not seen anything. The code is considered to be an example of police corruption and misconduct.