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“... on a practice planet to study their effects. When it comes to human welfare, as the economist Martin Weitzman once put it, attempts to anticipate the impact of climate change, especially beyond the short-term, face an ‘immense cascading of huge uncertainties’ of ‘truly stupendous’ scale and scope:There exists here a very long chain of tenuous ...”

“... at all. Even Hayek never countenanced that. In Climate Shock, the economists Gernot Wagner and Martin Weitzman give a sense of these risks in their discussion of what they call the ‘free driver problem’. Most of us are familiar with the ‘free rider problem’: the idea that collective action can be destabilised by lazy or unscrupulous people who ...”