Nature and Science Podcast · Don Murphy

Why Do Human Beings Behave Irrationally

·46 min·3 clips
Dan Ariely says self-acceptance changed only after he stopped hiding his injury with a half beard.
Don Murphy starts with credentials, placing Dan Ariely as a Duke psychology and behavioral economics professor, author, columnist, company co-founder, and decision making researcher. The pace is calm and deliberate. Ariely's work on money, medicine, cheating, social justice, and dishonesty gives Murphy a way into the bigger question: why do people do things that look irrational? The conversation later moves into politics. Murphy asks whether behavior that seems irrational from one angle can make sense inside a group's own belief system or paradigm. Ariely answers carefully. He separates outside judgment from the internal logic people use when identity, power, sacrifice, and belief are doing the steering. The Gaza discussion is heavy. Ariely describes Hamas as an extreme group and also criticizes the Israeli government for short-term political incentives. He is not trying to make the violence feel reasonable. His argument is colder than that: hate, aggression, votes, symbolic strength, and indifference to loss of life can keep destructive choices going even when the cost is obvious. Democracy gets pulled into the same frame. Ariely says leaders now talk mostly to their own side, which weakens shared truth and rewards identity-driven messaging. Murphy keeps returning to the core distinction. Can something look irrational from outside and still feel coherent inside another construct of meaning? Ariely resists calling that rational. Rationality, he says, is not the same thing as internal logic. The close returns to science literacy, with Murphy thanking Ariely, asking for likes and comments, and previewing a future conversation about DNA polymerase chain reaction and wrongful convictions.
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