This was a week when we got to consider the office of Prime Minister, again. The current occupant has somehow, through a sequence of decisions and non-decisions, made themselves a lame duck - despite a thumping majority two years ago and three years of a parliamentary terms to go. It is quite an impressive under-achievement, given the powers and privileges a Prime Minister has at their disposal. But for a Prime Minister to be on their way out is, as this blog has stated before, not unusual.