The polycrisis and the uncertainty possibility space

Abstract Non-technical summary At the heart of the polycrisis debate is the struggle to grapple with both the scientific and political uncertainties of the Anthropocene. The struggles over what to do about the polycrisis are thus found at the intersection of science and politics. We must approach the polycrisis as simultaneously a scientific and political challenge. To do so we propose that the polycrisis project adopts the methods of decision-making under deep uncertainty as a way to integrate and encourage collaborations between the scientific and policy worlds. Technical summary The polycrisis concept points to the interaction of multiple global crises and, arguably, to the difficulties in grasping the current moment with conceptual clarity. While Lawrence et al. emphasize the causal relations between crises in multiple global systems to define and operationalize the concept, we argue that they underestimate the politics of knowledge claims about the polycrisis, from the concept's performative function, from the normative claims it enacts or enables, and from the program of action that it carries or implies. We argue instead that at the heart of the polycrisis debate is the struggle to grapple with the (deep) uncertainties – both scientific and political – of the Anthropocene. Polycrisis is found operating at the intersection of science and politics where claims to scientific knowledge and political value, and scientific and political judgements, collide. Dealing with the uncertainties of the polycrisis is thus a matter of scientific methodological conundrum and a matter of political judgement and decision. We then propose that the polycrisis research program adopts decision-making under deep uncertainty methods to reach its objectives of improving policy outcomes, but also to better navigate what we call the uncertainty possibility space of the polycrisis. Social media summary The polycrisis is a struggle to grapple with the uncertainties of the Anthropocene which demands a new policy approach.