At the occasion of the reception of an award for life-time achievement by the U.S. Society for Ecological Economics, Herman Daly recaps the arguments against perpetual growth:

“We have many problems (poverty, unemployment, environmental destruction, budget deficit, trade deficit, bailouts, bankruptcy, foreclosures, etc.), but apparently only one solution: economic growth, or as the pundits now like to say, “to grow the economy”– as if it were a potted plant with healing leaves, like aloe vera or marijuana.

But let us stop right there and ask two questions that all students should put to their economics professors.

First, there is a deep theorem in mathematics that says when something grows it gets bigger! So, when the economy grows it too gets bigger. How big can the economy be, Professor? How big is it now? How big should it be? Have economists ever considered these questions? And most pointedly, what makes them think that growth (i.e., physical expansion of the economic subsystem into the finite containing biosphere), is not already increasing environmental and social costs faster than production benefits, thereby becoming uneconomic growth, making us poorer, not richer? After all, real GDP, the measure of “economic” growth so-called, does not separate costs from benefits, but conflates them as “economic” activity. How would we know when growth became uneconomic? Remedial and defensive activity becomes ever greater as we grow from an “empty-world” to a “full-world” economy, characterized by congestion, interference, displacement, depletion and pollution. The defensive expenditures induced by these negatives are all added to GDP, not subtracted. Be prepared, students, for some hand waving, throat clearing, and subject changing. But don’t be bluffed.

Second question; do you then, Professor, see growth as a continuing process, desirable in itself– or as a temporary process required to reach a sufficient level of wealth which would thereafter be maintained more or less in a steady state? At least 99% of modern neoclassical economists hold the growth forever view. We have to go back to John Stuart Mill and the earlier Classical Economists to find serious treatment of the idea of a non-growing economy, the Stationary State. What makes modern economists so sure that the Classical Economists were wrong? Just dropping history of economic thought from the curriculum is not a refutation!

Here are some reasons to think that the Classical Economists are right.

A long run norm of continuous growth could make sense, only if one of the three following conditions were true:

* 1. if the economy were not an open subsystem of a finite and non-growing biophysical system,

* 2. if the economy were growing in a non physical dimension, or

* 3. if the laws of thermodynamics did not hold.

Let us consider each of these three logical alternatives. (If you can think of a fourth one let me know.)

1. Some economists in fact think of nature as the set of extractive subsectors of the economy (forests, fisheries, mines, wells, pastures, and even agriculture….). The economy, not the ecosystem or biosphere, is seen as the whole; nature is a collection of parts. If the economy is the whole then it is not a part of any larger thing or system that might restrain its expansion. If some extractive natural subsector gets scarce we will just substitute other sectors for it and growth of the whole economy will continue, not into any restraining biospheric envelope, but into sidereal space presumably full of resource-bearing asteriods and friendly highly-evolved aliens eager to teach us how to grow forever into their territory. Sources and sinks are considered infinite.

2. Some economists say that what is growing in economic growth is value, and value is not reducible to physical units. The latter is true of course, but that does not mean that value is independent of physics! After all, value is price times quantity, and quantity is always basically physical. Even services are always the service of something or somebody for some time period, and people who render services have to eat. The value unit of GDP is not dollars, but dollar’s worth. A dollar’s worth of gasoline is a physical amount, currently about half a gallon. The aggregation of the dollar’s worth amounts of many different physical commodities (GDP) does not abolish the physicality of the measure even though the aggregate can no longer be expressed in physical units. True, $/q x q = $. But the fact that q cancels out mathematically does not mean that the aggregate measure, “dollars’ worth”, is just a pile of dollars. And it doesn’t help to speak instead of “value added” (by labor and capital) because we must ask, to what is the value added? And the answer is natural resources, low-entropy matter/energy—not fairy dust or frog’s hair! Development (squeezing more welfare from the same throughput of resources) is a good thing. Growth (pushing more resources through a physically larger economy) is the problem. Limiting quantitative growth is the way to force qualitative development.

3. If resources could be created out of nothing, and wastes could be annihilated into nothing, then we could have an ever-growing resource throughput by which to fuel the continuous growth of the economy. But the first law of thermodynamics says NO. Or if we could just recycle the same matter and energy through the economy faster and faster we could keep growth going. The circular flow diagram of all economics principles texts unfortunately comes very close to affirming this. But the second law of thermodynamics says NO.”