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Jennifer Nagel: Why Universal Skepticism Is Philosophy's Greatest Deception

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Apr 19, 2025

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Jennifer Nagel

Jennifer Nagel, a Professor of Philosophy at the University of Toronto, challenges the notion of universal skepticism as a philosophical deception. She argues that doubt is an illusion, and that knowledge often comes from immediate recognition. The conversation explores the complexities of knowledge versus belief, the Gettier problem, and the nature of certainty. They also touch on the implications of these ideas for self, free will, and consciousness, raising questions about how we can truly know anything at all.

02:43:17

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INSIGHT

Epistemic Intuitions Explained

Ordinary knowledge and self-conscious knowledge yield paradoxical, conflicting intuitions.
Understanding the mechanisms generating epistemic intuitions clarifies knowledge's nature.

insights

INSIGHT

Knowledge Beyond Justified True Belief

Knowledge is more than true belief; it entails justification or an account.
The classical analysis (justified true belief) fails due to intuitive counterexamples called Gettier cases.

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ANECDOTE

Desert Traveler and Water Illusion

A desert traveler hallucinates water but coincidentally finds real water below.
This classic illustrates why true belief plus justification isn't sufficient for knowledge.

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The Complexities of Knowledge and Belief

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Navigating Knowledge and Belief

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Exploring Philosophy Through Short Introductions

37:45 • 4min

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The Role of Analogy in Cognitive Processes

41:55 • 2min

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The Quest for Defining Knowledge

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The Nature of Certainty and Knowledge

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Perception, Reality, and the Self

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Nurturing Inquiry and Intellectual Growth in Philosophy Education

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Navigating Skepticism and Understanding

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Understanding AI Knowledge and Free Will

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Exploring the Nature of Truth

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Updates, Insights, and Community Engagement

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Analogy as the Fuel and Fire of Thinking

Douglas Hofstadter

Emmanuel Sander

This book, written by Douglas Hofstadter and Emmanuel Sander, delves into the cognitive mechanisms that underpin human thought. It posits that analogy-making is the fundamental process by which our brains make sense of the world, constantly seeking strong analogical links to past experiences. The authors use a variety of colorful situations involving language, thought, and memory to illustrate how analogy is essential for thinking, from everyday experiences to the highest achievements of the human mind.

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Knowledge

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Jennifer Nagel

This book provides an accessible introduction to epistemology, covering classic questions about knowledge and belief, as well as contemporary debates involving logic, linguistics, and psychology. It explores topics such as skepticism, rationalism, and empiricism, offering a clear and engaging exploration of the field.

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The History of Time

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In this book, Leofranc Holford-Strevens delves into the history of time measurement, discussing how different cultures have developed systems to measure time. The book covers topics such as the prehistory and history of the modern calendar, the measurement of days, months, and years, and the complexities of chronology. It also examines the philosophical and scientific debates surrounding the nature of time, highlighting the contributions of figures like Plotinus and St. Augustine. The author provides a comprehensive overview of how time has been understood and measured across various societies and historical periods.

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Knowledge and Its Limits

Tim Williamson

Tim Williamson's "Knowledge and Its Limits" is a highly influential work in contemporary epistemology. It challenges traditional approaches to knowledge, arguing for a more robust and demanding conception. Williamson's work emphasizes the importance of understanding knowledge as a fundamental and irreducible concept. The book's rigorous arguments and innovative approach have sparked significant debate and shaped the direction of epistemological inquiry. Its impact on the field is undeniable, prompting a re-evaluation of long-held assumptions about the nature of knowledge.

Philosopher Jennifer Nagel argues that universal skepticism is philosophy’s greatest deception, claiming that doubt is an illusion and knowledge is a primitive instant recognition. We explore the nature of knowledge, different forms of skepticism, the Gettier problem, and how these ideas relate to consciousness and free will.

- 00:00 - Introduction
- 01:28 - The Nature of Knowledge
- 10:58 - Philosophers and the Skeptical Mindset
- 16:57 - Types of Skepticism
- 22:27 - Exploring Knowledge Attribution
- 29:51 - The Illusion of Knowledge
- 34:16 - Knowing Without Knowing
- 38:10 - Writing About Knowledge
- 46:10 - Analyzing Knowledge
- 55:08 - The Gettier Problem and Its Challenges
- 1:01:10 - The Functionality of Knowledge
- 1:11:23 - Collaborative Understanding of Knowledge
- 2:10:00 - Understanding and Consciousness
- 2:26:32 - Truth and Its Nature
- 2:32:16 - Superposition and Contradictions
- 2:32:19 - Conclusion

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RESOURCES:

- Knowledge: A Very Short Introduction (book): https://www.amazon.com/Knowledge-Very-Short-Introduction-Introductions/dp/019966126X
- Knowledge and its Limits (book): https://www.amazon.ca/Knowledge-its-Limits-Timothy-Williamson/dp/019925656X
- Very Short Introductions (series): https://www.google.com/search?q=a+very+short+introduction+to+series&sca_esv=3da4db664be6b3a1&ei=ypX6Z6flHsDniLMP2v2QkQk&ved=0ahUKEwin8oSB9tKMAxXAM2IAHdo-JJIQ4dUDCBA&uact=5&oq=a+very+short+introduction+to+series&gs_lp=Egxnd3Mtd2l6LXNlcnAiI2EgdmVyeSBzaG9ydCBpbnRyb2R1Y3Rpb24gdG8gc2VyaWVzMgUQABiABDILEAAYgAQYhgMYigUyCxAAGIAEGIYDGIoFMgsQABiABBiGAxiKBTIIEAAYogQYiQUyCBAAGIAEGKIEMggQABiABBiiBDIFEAAY7wVIqBRQxAtYwBBwAXgAkAEAmAFZoAGtAqoBATS4AQPIAQD4AQGYAgSgAocCwgIKEAAYsAMY1gQYR8ICDRAuGIAEGLADGEMYigXCAg0QABiABBiwAxhDGIoFwgIPEAAYgAQYQxiKBRhGGPsBwgIbEAAYgAQYQxiKBRhGGPsBGJcFGIwFGN0E2AEBwgIGEAAYBxgemAMAiAYBkAYKugYGCAEQARgTkgcBNKAHph6yBwEzuAf_AQ&sclient=gws-wiz-serp#wgvs=e
- Time: A Very Short Introduction (book): https://www.amazon.ca/Time-Short-Introduction-Jenann-Ismael/dp/0198832664
- Laplace meets Godel: https://www.youtube.com/watch?v=ZB3tS7j7nNU
- Flexible Goals (paper): https://onlinelibrary.wiley.com/doi/pdf/10.1111/cogs.13195
- The Legend of the Justified True Belief Analysis (paper): https://philpapers.org/archive/DUTTLO-3.pdf
- Lay Denial of Knowledge for Justified True Beliefs (paper): https://philpapers.org/archive/NAGLDO
- TOE’s Consciousness Iceberg: https://www.youtube.com/watch?v=GDjnEiys98o
- Matt Segal on TOE: https://www.youtube.com/watch?v=DeTm4fSXpbM
- Curt reads Plato’s Cave: https://www.youtube.com/watch?v=PurNlwnxwfY
- David Bentley Hart on TOE: https://www.youtube.com/watch?v=NEAgVvW9i10
- Donald Hoffman on TOE: https://www.youtube.com/watch?v=CmieNQH7Q4w&t=1s
- Iain McGilchrist on TOE: https://www.youtube.com/watch?v=M-SgOwc6Pe4&t=6326s&ab_channel=CurtJaimungal
- Geoffrey Hinton on TOE: https://www.youtube.com/watch?v=b_DUft-BdIE
- John Vervaeke on TOE: https://www.youtube.com/watch?v=GVj1KYGyesI&t=1s
- Wolfgang Smith on TOE: https://www.youtube.com/watch?v=vp18_L_y_30
- Polymath’s Ai panel: https://www.youtube.com/watch?v=abzXzPBW4_s
- Donald Hoffman and Philip Goff on TOE: https://www.youtube.com/watch?v=MmaIBxkqcT4
- Robert Sapolsky on TOE: https://www.youtube.com/watch?v=z0IqA1hYKY8&pp=ygUUY3VydCByb2JlcnQgc2Fwb2xza3k%3D
- Curt debunks the “all possible paths” myth: https://www.youtube.com/watch?v=XcY3ZtgYis0&t=46s
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