I'm not sure whether the best comment about this would be the notion of a monkey with a typewriter eventually typing the complete works of Shakespeare or the fact that a stopped clock is right for one minute every 12 hours.
(I annoy Mrs P intensely by pointing out, every time we pass it, that the clock on the junction of Finchley Road and Hendon Way, which has to my recollection been broken for over a decade, is correct once every twelve hours. I have an inexplicable wish to arrive one day at the traffic lights in front of it at eight minutes to six, so I can tell the time from it.)