Much more than a 'thought bubble'

Yet such thinking never seems to account for the loss of prime agricultural land involved in building new outlying suburbs. I believe we have now reached a crisis point, concreting over our richest soils and most productive land. Just how long can we sustain the equation of increasing population and diminishing agricultural capacity? Once again the "pro- growthers" are silent.

Let's not for a minute underestimate the massive costs of sustaining our ever-expanding cities. The infrastructure costs of transports, and retrofitting the connections between the centre and the outer suburbs are immense. The newly elected State Government in Victoria has discovered that the costs of extending rail services to it new western suburbs has blown out to $5 billion and will be years behind schedule - if it is ever funded at all. All this for a couple of new stations.

These massive costs, faced by all our cities, will be borne by generations of taxpayers, yet any benefits will soon be swamped by increased numbers. As ever, we will continue to chase our tails on critical infrastructure as long as we remain addicted to growth.

Mr Elliott blames planning controls for restricting the release of new land for development, and in turn says this is to blame for Australia's precariously high property prices. He is surely being disingenuous, knowing full well that our massive population growth of recent years - close to 500,000 in 2010 alone – is the real reason for our unsustainable housing costs. We are now faced with another trap – needing more growth to maintain prices for fear of a vicious (and now probably inevitable) crash. It's this Ponzi Scheme economics that lies at the heart of most pro-population thinking.

The biggest one of course is the concerns about aging Australia and the costs of future pension payments. Never mind that in fact Australia has one of the youngest age profiles of any developed nation and studies by the Productivity Commission show the threat is exaggerated. Mr Elliot argues we must bring in more and more migrants to effectively pay the pensions of the retiring Baby Boomers or else we face ruin. Yet of course those migrants will in turn become elderly too one day, leaving us with an even bigger problem down the track.

The truth is most Boomers did pay their taxes in order to ensure a minimum pension and have been putting money away for their retirement. The problem is that governments, under pressure to supply the infrastructure to keep pace with the ever-expanding population, did not keep their end of the bargain. They have consistently failed to put tax receipts away at the necessary level to provide for pensions. And the reasons for this are pretty clear. Politicians are vulnerable to the pleadings of well-organised special interest groups, and one of the most effective has certainly been the pro-growth lobbyists and their willing accomplices in the media.

Mr Elliot claims Japan has suffered economically for failing to deal with its demographic challenges. In fact economists know the real cause of Japan's stagnant economy of the last decade: it is still reeling from the collapse of an unsustainable asset bubble, especially in property. The warning signs are there for Australia if we care to look. Now Japan must deal with a further massive blow, but at least its cohesive society is pulling together. One wonders if such a recovery from disaster would be possible if the nation was not held together by a common culture.

Yes, we could build a dozen Dubais along Australia's east coast, tear out every last piece of coal to power it, and import our food, at least for a while. Yes we could open the gates and bring in young migrant workers to pay for our current profligacy and prop up the property sector with no thought for the future. But the question remains, why? Who really benefits from such policies?

Later this year global population will pass seven billion. Mr Elliott may be relaxed by the slowing of absolute growth, but we are still adding nearly 80 million people to the planet every year and will certainly add at least two billion people more by mid century. With current trends in consumption, that means we need to find twice the energy and food we currently produce to supply the world's ever spiralling demands.

Can anyone really feel relaxed about the prospects of feeding, housing and powering a world that is already stretched to the limit? As we make the necessary and unavoidable transition from an oil-based economy, these demands will stretch our ingenuity to the limit - and perhaps beyond.

We have seen how fragile our growth-based economic system is. A collapse of the financial markets, followed by ghastly natural disasters have shown that we are just one unexpected shock away from crisis. It is foolish to expect that Australia will not be affected by these dangers, and we must prepare now for an uncertain future. The pursuitof endless growth is the least intelligent response we can make. We need a sensible discussion about the options and that means dispensing with the old myths that continue to cloud our thinking.