Processes: Designing Sustainability Assessment Regimes
There is very little rocket science in sustainability assessment. Sometimes it may be necessary to roll out complex equations for impact prediction and perhaps a few aspects of the desired trajectory for change can be illuminated through direct application of the laws of physics. But most of sustainability assessment is less precise and more difﬁcult than rocket science calculations. As we have seen, there is a short list of common decision criteria and trade-off rules that can serve as the generally applicable laws of sustainability assessment physics. In the practical world of assessment, however, every case also faces multiplicities of factors, layers of uncertainty and realms of case-speciﬁc peculiarities. The pursuit of sustainability is therefore always as much about context as it is about common goals and guidance.