摘要：Whereas social acceptability is emerging as a decisive criterion for evaluating the impact of infrastructure projects, this article examines the ways in which regimes of ethical rationalities can be mobilized in an environmental issue surrounding the proposed oil port in the St. Lawrence River, Quebec, Canada. Starting from a conception of these rationality regimes as "ways" of reasoning based on acts of valuation, the study addresses the discursive strategies by which promoters and opponents embody the “same” ethical value (associated with the protection of the environment) and articulate it with other values, revealing intertwining and responding anthropocentric and biocentric rationalities. In fact, if some axiological registers are of a particular position (affective, for the opponents; technical, for the promoter) and others are shared (ethical, epistemic, economic), what places the controversy in the logic of dissensus is, in last resort, their articulation and hierarchization in discourse.
