
694 Principles of Sustainable Energy Systems
© 2008 Taylor & Francis Group, LLC
make the mistake of pursuing sustainability as an absolute requirement. Green solutions
have gained marketing success, but we cannot build a “sustainable” version of a car, house
or ofce building, product, or an appliance because sustainability is a complex system
condition over a long time frame. We can see why sustainability has been much more
difcult to progress to the same practitioner level as safety engineering. New ideas for
identifying and assessing long-term risks and for managing the relationships between
species and generations need to be developed. The ...