Why political beliefs can outlast their evidence
Nadeem F. Paracha's column offers a way to discuss rational irrationality, group rewards and the cost of being wrong in political behaviour.
- Publication
- Dawn
- Author
- Nadeem F. Paracha
- Publication date
- 26 Jul 2026
Source citation: Nadeem F. Paracha. “Why political beliefs can outlast their evidence.” Dawn, 26 Jul 2026.
01 / The briefing
The column explains Bryan Caplan's idea of rational irrationality: people can keep beliefs that appear factually weak when holding them brings identity, social approval or emotional reward while imposing little personal cost.
This framework does not excuse misinformation. It helps explain why evidence alone may fail to change political behaviour when a belief is tied to belonging, status or a sense of moral certainty.
For exam preparation, the value lies in using the concept carefully. Candidates should separate an explanation of behaviour from an endorsement of the belief, and discuss incentives, institutions and accountability without making unsupported claims about particular voters.
Why it matters
Supports analytical answers on political culture, misinformation, group identity, democratic accountability and behavioural economics.
02 / Key arguments
What should enter your answer?
- 1
The perceived personal cost of being wrong can affect whether people revise a belief.
- 2
Group identity and emotional rewards may reinforce a belief even when evidence is weak.
- 3
Political analysis should distinguish an individual's incentives from the social consequences of a widespread belief.
- 4
Institutions that reward evidence and accountability can reduce the public cost of misinformation.
03 / Evidence desk
Facts worth retaining
- Rational irrationality
- Concept discussed
- Bryan Caplan
- Thinker cited by the source
- The Myth of the Rational Voter
- Book referenced
04 / Vocabulary
Use the language precisely
- Rational irrationality
- Holding a weak or false belief because it brings personal or social rewards at little perceived cost.
- Incentive
- Something that encourages a person to act in a particular way.
- Collective wellbeing
- The overall welfare of a community rather than the benefit of one individual.
05 / Syllabus map
06 / Think further
Questions for discussion
Why might a belief persist even after contrary evidence is available?
How can institutions increase the public value of evidence-based decision-making?
Where is the line between explaining political behaviour and excusing harmful misinformation?
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