In this deliberately provocative commentary, I interrogate the relationship between two critical perspectives on the one-sided scientific framing of the climate issue: a constructivist interpretation of climate modeling on the one hand and the debate in political theory on the depoliticization of the public sphere on the other. I argue how they could be tied together in order to provide an enriched understanding of climate denial as a symptom rather than a cause of dysfunctional climate politics. It is my claim that in attempting to translate the universal validity of scientific knowledge into the contours of an inclusive, consensual negotiation model, the constitutive role of exclusion in the emergence of scientific objectivity is overlooked.