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The term #FixedPieGallacy is also used more generally to refer to the idea that there is a fixed amount of wealth in the world. This and other zero-sum fallacies can be caused by #ZeroSumBias.
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That's a huelluva bias, the #ZeroSumBias , I fear it is at the root of a lot of #regressivePolitics doing damage across the globe.

People voting against their own interest because it may help a person they have been trained to hate.

It bothers me especially in countries founded on immigration.