• “Cognitive biases are systematic patterns of deviation from norm or rationality in judgment, creating subjective perceptions that deviate from objective reality.”
  • “Understanding these cognitive biases is crucial for philosophers, as awareness of these biases can lead to more rigorous and unbiased thinking, analysis, and discussion.”
  • “Cognitive biases influence how individuals perceive and argue about various issues, including those debated in public and historical contexts.”
  • “These examples illustrate how cognitive biases can shape the course of public debates and decision-making, often leading to flawed judgments and actions.”
  • “Understanding these biases is crucial for critical thinking and for developing more reasoned and equitable discussions in public discourse.”
  • “Confirmation Bias: Seeking information that confirms existing beliefs and neglecting contradictory evidence.”


List the 20 most common cognitive biases seen in philosophical discussions.


Provide 5 examples of actual cognitive biases found in historical public debates.


Provide a 15-item quiz on common cognitive biases with answers at the end.



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Phil Stilwell

Phil picked up a BA in Philosophy a couple of decades ago. He occasionally teaches philosophy and critical thinking courses in university and industry. He is joined here by ChatGPT 4, GEMINI, CLAUDE, and occasionally Copilot, his far more intelligent AI friends. The five of them discuss and debate a wide variety of philosophical topics I think you’ll enjoy.

Phil curates the content and guides the discussion, primarily through questions. At times there are disagreements, and you may find the banter interesting.

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