Here’s a thing. Why would you have any international agreement to reduce carbon emissions when governments across the globe are spending 8.5% of tax revenue on fossil fuel subsidies?

Allow yourself to imagine that you come from a nation where the per capita emissions was less than the global average of around 4.5 tCO2e — you could choose any from around 120 different ones.

You would not be too chuffed at any international agreement on emission reduction when you find out that a big chunk of taxpayers money goes to propping up the problem. You could ask this perfectly sensible question: Why not reduce the subsidies? Wouldn’t that make emitting more expensive and be the very market force that complex trading schemes were designed to achieve?

Now you would be told, well yes, but it’s not as simple as that.

Except that it is.