There's an acidification concern here, not because of a delay in ongoing reductions of SO2, but because of reduced motivations to reduce CO2.

And that poses a problem, because it is hard to argue to people that they shouldn't do X because it will make Y less painful, and we want the pain caused by Y to make them do Z.

Here, X = SO2 cooling, Y = CO2 increase, Z = CO2 emission reduction.

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