
LessWrong (30+ Karma) Information Hygiene
Nov 28, 2025
Exploring whether loud noises can trigger avalanches leads to a deeper dive into our mental defenses against misinformation. The discussion highlights two immune systems—biological and memetic—and their vulnerabilities. Listeners learn how knowledge acts like a vaccine against gullibility, while tracing the origins of beliefs helps combat misinformation. Practical tips are shared, encouraging mindfulness and critical thinking to maintain mental hygiene. Overall, the episode emphasizes the importance of protecting our minds from the relentless onslaught of misleading narratives.
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Memes Spread By Catchiness, Not Truth
- Ideas spread by memetic fitness, not truth, so catchy claims often outrun accuracy.
- Your mind faces constant information attacks analogous to biological pathogens.
Two Immune Systems: Biological And Memetic
- Minds have innate and adaptive defenses mirroring the immune system with similar failure modes.
- Emotional and cognitive fatigue weaken epistemic defenses just like stress weakens immunity.
Build Multiple Lines Of Epistemic Defense
- Protect your beliefs by shaping your environment and building knowledge as barriers to false claims.
- Practice logical reasoning and peer checks to catch bad arguments that pass your initial filters.


