There’s an old cliche which states that the arrival time of a certain kind of road-based, public transport vehicle has little to do with traffic flow, mechanical problems, and the ever-unpredictable human element all conspiring to exert a negative impact upon the published timetable (and, inevitably, your opinion of the eternal optimist who formulated it). Apparently it is, instead, more like blog post ideas, in that there’ll be extended periods of bugger all followed by a flurry of activity;