Abstract
This paper presents three different metaphors for sustainability in the Anthropocene. The first metaphor is the widely used notion of an ‘ecological footprint’, which offers a snapshot of what sustainability would require today using existing technologies. The second metaphor is one of a rocket taking off. Unlike the static footprint metaphor, this metaphor allows for the possibility that achieving a long-term sustainable trajectory might require entering a temporary state of even higher levels of unsustainability. Finally a third metaphor is presented, in which human civilisation is likened to an airplane and modernity to a runway. This metaphor suggests that sustainability can be achieved either by (1) a take-off into a post-scarcity space-faring civilisation or (2) a deceleration into a small-scale economy based on norms of frugality and simplicity. The third metaphor highlights the risk that insufficient political commitment to either trajectory might lead to (3) a catastrophic ecological overshoot.
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