PMQs isn't fit for purpose. But it is the symptom not the disease

Week after week, the noise at Prime Minister's Questions has gotten louder. The half hour sessions have been drowned in noise growing more inconsiderate, more deliberately vindictive, with each passing week. Having to listen to the Conservative benches braying, on live television, to drown out the questions of the opposition, can be an exercise in masochism.

It seems pretty obvious at first look that PMQs is broken. And yet, it fits so perfectly within the Westminster system. That in itself is a sign of a much deeper problem in the British political system.

The essential trouble with PMQs is that it fits in a little too perfectly with the adversarial political culture in the UK. The two sides, the government and opposition, line up opposite to one another to, supposedly, hold the government to account.

The trouble is that this polemic is bias refined, a subjective contest where the government holds one view and thinks it is right and the opposition holds another and thinks it is right. What follows is a sparring match between the unstoppable and the immovable.

That contest is perfectly fitted to the UK's us-versus-them, first-past-the-post and winner-takes-all politics. Two implacable foes, coming from fixed positions having arguments that by their nature cannot be resolved. The government will do what it will and the rest is theatre.

There is certainly am uncontestable need for the public to see, in the flesh, what it is that each side stands for, argued for, hopefully, eloquently - maybe even persuasively. Yet PMQs is one the very few public moments in which there is an opportunity to enforce upon the government - handed extraordinary power in the UK - some kind of accountability.

However, when you cross the two purposes, the party publicity exercise and holding the government to account, only one of them is ever going to win. Accountability is sunk beneath bravado, noise and petty point-scoring.

In Scotland there has been attempt to début a revised First Minister's questions, changing up the system to provide more time for a calmer session with more interrogation. But even that is limited in what it can achieve.

It cannot escape a political culture of fixed adversarial positions and that is expressed, at its worst, in an exercise that is not supposed to be 'political' being consumed by politics.

Ideally, the process of holding the government to account would be something akin to a committee hearing. The Prime Minister would be brought before them and have to give acceptable answers to fundamental questions: What is your government doing? From where does it derive the mandate for that action?

The government's reluctance to put PM David Cameron into the election debates suggests an immediate weakness to this particular alternative: Would the party political machine ever submit to the Prime Minister and the government being put so clearly on trial? Probably not.

Right now the European Union's democracy is under scrutiny. But Westminster's shortcoming shouldn't be swept under the rug. Winner-takes-all makes a mockery of political representation and the adversary system simply reinforces the alienation of citizens from their government - keeping the real business far from the vigilant eyes of those who would want answers to the difficult questions that could hold it to account.