I have stopped laughing about Greta Thunberg’s performance
at the United Nations a few months ago.
At the time, I was amused by her quixotic antics in
attacking world leaders. People who think they can change the world by
staging tantrums do not deserve to be taken seriously. It was predictable that Greta’s outburst would have a
negligible impact on climate change policies.
I was also amused by Greta’s misconceptions about the
relationship between economic growth and climate change.
On reflection, however, those misconceptions are no laughing
matter. They are more widely held than I had imagined, including among some people
who have had a great deal more education than Greta. By making economic growth
the villain, climate activists seem likely to antagonize many of the people who
would like more action to be taken to reduce greenhouse gas emissions.
Global climate change is perceived to be a serious problem
by a high proportion of the population in many different countries. However,
there is much less support for action to be taken to limit greenhouse gas
emissions. The obvious obstacle is the additional cost to consumers of transition to
alternative energy sources (including the cost of energy storage and backup to
ensure reliable supplies). The advocates of zero economic growth add another
obstacle by telling people they will have to make huge changes in their lifestyles to mitigate climate change. The lifestyle changes required
for adaptation may seem preferable to many people.
The nature of economic growth
Misconceptions about the relationship between economic
growth and climate change stem largely from ignorance about the nature of
economic growth.
When economists talk about economic growth, defined as an
increase in the amounts of goods and services produced, some environmentalists
just think of increases in the amount of stuff they don’t like. A little further
thought might enable them to acknowledge that much additional stuff is being
produced these days under environmentally friendly conditions. They might even
be particularly fond of some additional stuff e.g. organic food, solar panels,
electric cars and batteries. There are also some services they might like, such as
health and education.
Greta and her followers are probably concerned that economic
growth requires us to dig up more and more natural resources until there are no
more to be discovered. If that was true, it would be easy to understand why
they might see endless economic growth as a fairy tale. However, growth in
capital stock - created by transforming natural resources into equipment,
buildings and infrastructure - typically accounts for only a small proportion
of economic growth. In the 1950s, research by Robert Solow, a Nobel
prize-winning economist, showed that only one-eighth of the increase in gross
national product per man-hour in the United States between 1909 to 1949 could
be attributed to increased capital stock. The remaining seven-eighth, which
became known as the Solow residual, was attributed to technical change. Subsequent
research has shown part of the Solow residual to be associated with improvement
in labour skills, with the remainder, often described as total productivity
growth (or multifactor productivity growth) being attributed to innovation,
technological progress and the advance of knowledge.
Economic growth will probably end one day, but there doesn't seem to be anything inherent within the growth process that must bring that about. How do Greta and her followers propose to end economic growth? Do they propose to require people to take the benefits of
technological progress in the form of more leisure, rather than more goods and
services? Or do they propose to stop the advance of knowledge and innovation?
The former approach seems more likely. It is certainly not unprecedented in human history for the advance
of knowledge to come to a virtual standstill for long periods. However, it
would be surprising to see the environmentalists of wealthy countries advocate
policies to make that occur.
Environmental impacts of growth
If economic growth is largely about innovation,
technological progress and the advance of knowledge, does it necessarily have
adverse environmental impacts? Of course
not! In recent years, a significant amount of research, development and
innovation has been directly related to development of alternative energy or
other environmentally friendly activities.
Much of the other innovation that has occurred over the last
decade or so - for example, improvements in communication technology - seems to
have been benign in terms of its environmental impacts. It is possible to think
of technological innovations that have raised environmental concerns, e.g.
fracking and genetically modified crops, but that could hardly justify the
blanket ban on innovation that is implicit in a zero economic growth scenario.
My view of growth
At this point some readers might have gained the impression
that I am an advocate of endless GDP growth. That is not so. My reservations
about GDP as a measure of well-being, and of GDP growth as a societal objective
have been on display in articles I have written over the past 15 year (for
example one on the priority given to economic growth in Australia, and one on
the concept of Gross National Happiness).
As discussed previously on this blog, I advocate growth in
opportunities for human flourishing - that is, growth of opportunities for individuals
to live the lives that they aspire to have. If increasing numbers of individuals
choose a lifestyle involving stable incomes and more leisure to one with rising
incomes, I can see no reason to object (unless they want me to subsidize their
lifestyle choice). In my view, there is certainly no case for governments to
require or induce people to work harder or longer to foster growth of GDP.
However, it seems likely, even in high income countries,
that for the foreseeable future the aggregate outcome of choices freely made by
individuals as consumers and producers of goods and services will continue to involve
economic growth. That outcomes seems likely, even in the presence of the
minimal restrictions on individual freedom are necessary to achieve widely
accepted environmental goals.
Those who urge the introduction of policies to stop economic
growth are contemplating a great deal more interference with the rights of
individuals to manage their own lives than could possibly be justified to
pursue widely accepted environmental goals.
Bottom line
Despite substantial reductions in the cost of alternative
energy that have occurred over the last decade or so, the cost of transition to
alternative energy still seems to be a major obstacle to effective international
action to reduce greenhouse gas emissions. Those who make the false claim that
economic growth is incompatible with widely accepted environmental objectives
are adding a further obstacle to effective international action.
Instead of frightening people by urging governments to impose
huge changes in lifestyles on citizens, perhaps environmental activists could
pursue their goals more effectively by making a case for further government
funding of research to help make alternative energy more affordable.