Of course, sustainability economics is a concept in the early state of development (i.e. its r-phase). Thus, future sustainability economists must specify and operationalize many concepts mentioned in this subsection in specific contexts and applications. Yet, the fundamental issue
here is that there is little indication given, how to select such criteria. Since remaining unclear about some of these fundamental issues bears the risk to lead to unsustainable outcomes in formulating policy recommendations.Sustainability economics can build upon a rich body of
literature used in ecological economics. The question in this stage of development, however, is which ones will be chosen