DRAFT

Abstract (300 words) The goal of this paper is to illustrate an innovative methodology, Multi-Scale Integrated Analysis, developed for dealing with the new challenges implied by multi-criteria analysis of sustainability: (i) An integrated assessment of sustainability requires a multi-dimensional and multi-scale analysis. This translates into the need of handling technical incommensurability [ = dealing with non-equivalent perceptions and representations of the reality resulting from the adoption of different criteria of observation and different scales]. (ii) When comparing human values it is not possible to define, in substantive terms, “the best course of action”. This translates into the need of handling social incommensurability [ = dealing with the unavoidable existence of legitimate but contrasting perspectives found among social actors about what should be considered an improvement or a worsening]. (iii) It is not possible to generate accurate and relevant scenarios when forecasting the future of adaptive systems evolving across scales. This translates into the need of handling a heavy level of uncertainty and genuine ignorance when using science for governance. The paper is divided in three parts. Part 1 introduces, from a theoretical point of view, the epistemological challenges implied by Multi-Dimensional, Multi-Scale analyses of sustainability