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Exactly - see my second post I added on the declining marginal utility of money.
Yup, thought of that one as well. If you don't know why something is the way it is, you ought not to call it irrational or call for its removal. That's what economists are doing here. Time to rewrite the entire Kahnneman Tversky hagiography.
Not sure I'd rewrite all of Kahneman/Tversky. But on this point, the implicit assumption that each dollar is of equal marginal utility to people is fundamentally wrong.
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