Does Big Brother exist, in the sense that I exist? You do not Exist.
They are the last 12 people alive on Earth, having destroyed the rest of the planet; and one will continue to die off each week, slowly being consumed and irradiated to blissful bone. They do not talk about current affairs because they are fully aware that there are no further current affairs to talk about. There is nothing and no one beyond these discreetly positioned electrified fences.
I haven't been watching Celebrity Big Brother (I'm not proud) but how odd that it has moved away from the spectacle of elegiac Warholian eeriness described by Marcello into a bi-annual kerfuffle of controversy.