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  Overcoming the Controversy Between Neoclassical


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Overcoming the Controversy Between Neoclassical 
and Ecological Economics 
The two approaches of weak and strong sustainability still stand in opposition to 
each other. Efforts were made relatively early to bridge the differences in the con-
trary positions. The contributions of Steurer ( 
2001
 ), for example, deserve mention 
(von Hauff and Jörg
2013
, p. 130ff). This effort also includes the concept of “sus-
tainable economics” as presented, for example, by Rogall ( 
2012
 , p. 190). However, 
these approaches do not by any means present a uniform position. For example, 
while Steurer promotes strong sustainability, Hedinger tends to focus on weak sus-
tainability. The approaches nevertheless combine the strengths of both concepts. 
In this respect, it is appropriate to return to the category of vital natural capital. 
As already established in the two-step sustainability rule, there is no substitute for 
essential natural capital and it must not be endangered. On the other hand, the sub-
stitution of nonessential natural capital is permitted. The problem, as has already 
been mentioned, is in defi ning acceptable limits on the use of essential natural capi-
tal. The issue involves accounting for the unpredictability and risk, which is not 
always clear or easy to defi ne. 
At a minimum, an intact ecosystem multiplies the prosperity of humans and is 
therefore indispensable. Sometimes real and natural capital are substitutable and, in 
other cases, complementary. If this insight is applied to the central point of the con-
troversy between neoclassical economics and ecological economics, the following 
becomes evident: Neither a general halt to growth (ecological economy) nor infi nite 
quantitative growth (neoclassical economy) seems to be warranted. Pearce claims 
that growth, in addition to the many positive effects like the strengthening of the 
social security systems, stabilization of the labor markets, and the increase in gov-
ernment revenues with the associated greater scope for government expenditures on 
things like education and research, also facilitates efforts to preserve the environ-
ment for motivational, structural, and fi nancial reasons (Pearce
1991
 , p. 11). 
Through improved effi ciency, frugality, recycling, structural improvements, and 
increased use of alternative renewable resources, it must be possible to decouple the 
two factors of growth and environmental quality from one another. Decoupling, for 
example, may refer to a rising GDP and a lowering of emissions. In this case, a clear 
target for the lowering of emissions (absolute decoupling) should be defi ned. The 
advocates of balanced sustainability promote an economic and ecological optimiza-
tion. Balanced sustainability envisions a slowing of growth or a stop to growth 
solely as a potential result of the ecological restructuring of the society. In effect, the 
aim is for the harmonization of growth and environmental quality.
Task: Please discuss how the supporters of balanced sustainability integrate the 
two opposing positions of weak and strong sustainability.
Considering some successful examples of the substitution of natural capital 
with real capital, it does not appear necessary to reject the substitution rule fully. 
There are some situations in which real capital can be substituted for natural capital 
(e.g., cultivated, managed forests). However, the idea of unlimited substitution, as 
8 Sustainable Development in Economics


106
is permitted in the framework of weak sustainability, does not support the require-
ment for intergenerational equity. This is predicated on the unpredictable risk asso-
ciated with the rising consumption of essential natural capital. 
It can be assumed that technological progress will continue in the future, and 
new alternatives for the substitution of natural resources will be found. Nevertheless, 
there is no reason to assume with any regularity that technological innovation will 
be in a fundamental position to fully and equivalently replace natural capital. 
Consequently, every ecological function must have an “artifi cial substitute.” For 
example, to substitute a forested area, fully equivalent functions must be provided. 
There can be no downside to the substitute that was not also present in the original 
(von Hauff and Jörg
2013
, p. 131). The substitute must verifi ably exist and not just 
be promised in the “escape avenues of technological daydreams” (Ott and Döring 
 
2008
 , p. 156). If happiness and moral values are included in the equation, it may be 
assumed that future generations may not even want the substitution of nature. With 
that in mind, it can be said that strong sustainability leaves open more options than 
weak sustainability, and it gives future generations more “freedom to choose.” 
In summary, balanced sustainability takes on a mediating role in this debate, in 
which not only a constant total stock of capital, but, because of the limited substitut-
ability of natural capital, many of the essential components of natural capital (cli-
mate balance, global life cycles, ozone layer, and balanced ecological system like 
forests, lakes and rivers, biodiversity, etc.) must also be maintained at a constant 
level. The maintenance of a minimum reserve is proposed for less vital stocks 
(Pearce
1991
 ). It must also be acknowledged in this context that not all of the rele-
vant information necessary to facilitate the identifi cation and defi nition of clear lim-
its on essential natural capital is available.

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