Sustainable practice 1/commonly used models

Stong Sustainability

“This model recognises that the economy is a subset of society (i.e. it only exists in the context of a society), and that many important aspects of society do not involve economic activity. Similarly, human society and the economic activity with it are totally constrained by the natural systems of our planet” (NZ PCE quoted by Pam Willams (PhD)

Work in progress, expect frequent changes. Help and feedback is welcome. See discussion page.