At the Bonn Climate Conference that took place last month, philosophical theorising entered the political negotiations. UN climate chief Cristiana Figueres noted that “equity is difficult to define” and everyone agrees: There is a bewildering disagreement on equity principles. Dr. Prodipto Ghosh therefore stressed that equity norms must not simply be asserted but must also be justified. You can see him talk here (minute 29), invoking Popper and Rawlsian ideas along the way.
In his view, we must systematically compare different equity proposals by following a six step validation procedure (see p. 8 and 9 here). A crucial step includes testing whether the different equity proposals are consistent with basic ethical criteria (universalizability, avoiding harm, etc., see p. 10 and 11 here). While his specific suggestions are based on some – in my view – adventurous philosophical premises, the basic thrust seems right: We better find some way to resolve that disagreement.
Dr. Ghosh and myself might be wrong in thinking that the best means to resolve the disagreement over equity norms consists in finding agreement on a method to resolve the disagreement. That might be too academic and too artificial to be of any help in practice. I am not sure what other means would be more effective in achieving the goal of agreement. But what I am sure about is the importance of agreement (or at least convergence). Why? The bewildering variety of equity proposals makes room to choose one’s favorite principle based on self-interest (cf. Lange et al.).
A good example is the US negotiator who made self-interested use of the disagreement on equity in subtle but powerful ways. You can see him talk here (at minute 11:40). He stressed how there were multiple interpretations of equity, how each interpretation is valid, how equity is a qualitative concept that doesn’t fit into a formula and how we should respect diversity of opinion. He displayed other ingenious ways of dodging the equity issue (such as ruling out equity proposals on account of their lack of realism, meaning nothing else than that rich countries are not willing to bear the costs). But the above mentioned insinuations were particularly salient in instrumentalizing disagreement for the purpose of avoiding being nailed down. This proves Dr. Ghosh right: We should not rest content with the current state of massive confusion & disagreement over equity principles.