These dashboards are useful in at least two respects. First, they are an initial step in any analysis of sustainability, which by its nature is highly complex and therefore necessitates an effort at establishing a list of relevant variables and encouraging national and international statistical offices to improve the measurement of these indicators. The second one is related to the distinction between "weak" and "strong" sustainability. The "weak" approach to sustainability considers that good performance in some dimensions can compensate for low performance in others. This allows a global assessment of sustainability using mono-dimensional indices. The "strong" approach argues that sustainability requires separately maintaining
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