Paradise Towers two elderly residents ("rezzies") live. Tilda and Tabby explain that all the able-bodied men left the Towers to fight a war, leaving behind only children and the elderly. The only other man still loose in the Towers is Pex, a would-be hero, who appoints himself Mel's guardian. At the Caretaker control centre, the Doctor meets the Chief Caretaker, who greets him as the Great Architect, designer of Paradise Towers, and then promptly calls for him to be killed The Doctor cites an imaginary rule from the Caretakers' manual, confusing them enough to make his escape. Mel and Pex meanwhile have
Great Architect of the Universe trace how the name and the abbreviation entered Masonic tradition from the "Book of Constitutions" written in 1723 by the Reverend James Anderson. They also note that Anderson, a Calvinist minister, probably took the term from Calvin's usage. Christopher Haffner's own explanation of how the Masonic concept of a Great Architect of the Universe, as a placeholder for the Supreme Being of one's choice, is given in "Workman Unashamed": The Swedish Rite, which has the prerequisite of professing to Christian Faith, uses the form "The "Threefold" Great Architect of the Universe". The Great Architect may also be a metaphor alluding