[gbog]

> every individual behaves in their best interest

Daniel Kahneman says this has been proven false in his book Thinking Fast and Slow.

It think it is wrong on two levels. First individual's "perceived best interest" is often very far off of their real interest. Second, individual, and not only a few edge cases, are often not behaving in their best interest, even if we consider it to be their "perceived best interest".

Kahneman listed the three attributes of humans modelized as "econs" in the most common economic model: They are rational, selfish and their taste do not change over time. All three are obviously wrong.

[Alex_MJ]

You're right - I should have phrased it "perceived self-interest mixed with doses of human volatility/irrationality"