Not to criticize taxing CO2 emissions (which has a solid case), but there is indeed an analogous dynamic here to Pascal&#x27;s Wager: just as you ask &quot;which God&quot;, one could ask &quot;which emergency?&quot;, sampled from the set of events that respectable scientific movements have demanded immediate action on.<p>In the 70s, for example, one respected movement held that there would be an overpopulation crisis that justified drastic measures to halt the birth rate. There have been similar movements against nuclear power.<p>Alternatively, if we took immediate action on the crisis global poverty and got everyone up to Western living standards, that would conflict with the goal of reducing our environmental load.  (Just as taking Pascal&#x27;s Wager for God one conflicts with God 2.)