It was perfectly understandable that, as a consequence, the left in politics was seen as the doctrinaire element in the political spectrum, whereas the right was identified as pragmatic and concerned with what would work. Indeed, it is the fear of being characterised as ideologically driven that inhibits today's leaders of the left from straying too far from current orthodoxy.
Parties of the right have found it advantageous, on the other hand, to clothe their lurches rightwards in the language of experiment and exploration of what is possible, rather than of ideology. They have also proceeded stealthily, one small step at a time, with the intention of concealing from the public that each new step is in reality a further development of a highly ideological agenda.
That may, however, be about to change. As the tide of 'free market" orthodoxy has reached its high-water mark and appears to be receding (at least in most parts of the western world other than the euro zone), it is more and more likely to leave exposed to public view those new policy initiatives that seem to have little to do with common sense and practicality and to reflect much more clearly what are doctrinaire preoccupations.
Consider the following recent instances.
The government's ideological preference for private over public provision has led them to engage Serco - an international firm already notorious for its failures in a range of countries - to run some of our prisons. The outcome? The shambles - and the unacceptable and damaging shambles at that - now revealed at Mt Eden prison.
Charter schools? An idea that has already been shown in its country of origin, Sweden, to produce disastrous results in terms of educational standards, and is now in the process of proving that point all over again in New Zealand, at the expense of some of our most needy and disadvantaged children.
And what about the wacky idea of financing the delivery of social services to some of our most vulnerable citizens, including the mentally ill, by selling bonds to private investors who will then expect to make a profit from their "investment"?
What links all of these and other similar ideas is that they have little to do with what will work and best serve the interests of society and its citizens. They are instead all statements of ideologically driven preference - in each case, a preference for private provision, not because it works better, but because it is a faithful rendition of "free market" theory.
It seems, in other words, that the usual view of the left as doctrinaire and the right as pragmatic is in course of changing. It is now the right that espouses the ideological approach and that will go on doing so for as long as it is not held to account and its bluff is not called.
It is the left (when it can make up its mind and, like the lion in the Wizard of Oz, reclaim its courage) that has the opportunity to offer new alternatives to free-market orthodoxy that are not the product of doctrine, but are simply sensible and will produce better outcomes.
Bryan Gould is a former UK Labour MP and former vice-chancellor of Waikato University.
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