#600: Finite Knowledge, Infinite Ignorance
From Sigma Nutrition Radio by Danny Lennon
March 31, 2026 · 2h 0m
About this episode
Danny and Alan reflect on their evolving views in nutrition and scientific reasoning in the 600th episode of Sigma Nutrition Radio.
"The more we learn about the world, and the deeper our learning, the more conscious, specific, and articulate will be our knowledge of what we do not know, our knowledge of our ignorance. For this, indeed, is the main source of our ignorance — the fact that our knowledge can be only finite, while our ignorance must necessarily be infinite." – Karl Popper To mark Sigma Nutrition's milestone 600th episode (and 12-year anniversary), Danny and Alan examine several areas in which their views have changed, softened, strengthened, or remained stable over the lifespan of the podcast. The discussion is therefore not only about nutrition itself, but also about the process of scientific reasoning: how positions are formed, what type of evidence can shift them, and why changing one's mind is often a sign of better thinking rather than inconsistency. The episode therefore serves as both a review of several specific nutrition controversies and a lesson in scientific epistemology. They discuss topics such as red meat, protein, dietary cholesterol, omega-3s, flavonoids, and sodium. Timestamps [11:04] Time-restricted eating [19:32] Protein intake, quality & dosing [35:04] Cocoa flavanols and…
People in this episode
Host: Danny Lennon
Guest: Alan
Topics covered
- scientific reasoning
- nutrition controversies
- dietary cholesterol
- omega-3 supplementation
- energy balance model
Keywords
- finite knowledge
- infinite ignorance
- red meat
- protein intake
- cocoa flavanols
- sodium J-curve
- energy balance
Mentioned in this episode
Books & works: Sigma Nutrition Radio
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