LESSWRONG
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Highlights from the Sequences
Thinking Better on Purpose
Pitfalls of Human Cognition
The Laws Governing Belief
Science Isn't Enough
Connecting Words to Reality
Why We Fight
Further Reading
Predictably Wrong
Replacing Guilt
CFAR Handbook

Highlights from the Sequences

"The Sequences" is a series of essays by Eliezer Yudkowsky. They describe how to avoid the typical failure modes of human reason and instead think in ways that more reliably lead to true and accurate beliefs. These essays are the foundational texts of LessWrong.

To provide a quick and accessible introduction to The Sequences, we have selected 50 of the best essays that capture some of the seminal ideas. 

Estimated read time of 8 hours.

Art by Dall-E 2

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Thinking Better on Purpose

Part 1 of 6 from the Sequence Highlights. 

Humans can not only think, but think about our own thinking. This makes it possible for us to recognize the shortcomings of our default reasoning and work to improve it – the project of human rationality. 

39 min read
The Lens That Sees Its Flaws
What Do We Mean By "Rationality"?
Humans are not automatically strategic
Use the Try Harder, Luke
Your Strength as a Rationalist
The Meditation on Curiosity
The Importance of Saying "Oops"
The Martial Art of Rationality
Twelve Virtues of Rationality
Pitfalls of Human Cognition

Part 2 of 6 from the Sequence Highlights.

A major theme of the Sequences is the ways in which human reasoning goes astray. This sample of essays describes a number of failure modes and invokes us to do better.

43 min read
The Bottom Line
Rationalization
You Can Face Reality
Is That Your True Rejection?
Avoiding Your Belief's Real Weak Points
Belief as Attire
Cached Thoughts
The Fallacy of Gray
Lonely Dissent
Positive Bias: Look Into the Dark
Knowing About Biases Can Hurt People
Politics is the Mind-Killer
The Laws Governing Belief

Part 3 of 6 from the Sequence Highlights.

While beliefs are subjective, that doesn't mean that one gets to choose their beliefs willy-nilly. There are laws that theoretically determine the correct belief given the evidence, and it's towards such beliefs that we should aspire.

99 min read
Making Beliefs Pay Rent (in Anticipated Experiences)
What is Evidence?
Scientific Evidence, Legal Evidence, Rational Evidence
How Much Evidence Does It Take?
Absence of Evidence Is Evidence of Absence
Conservation of Expected Evidence
Argument Screens Off Authority
An Intuitive Explanation of Bayes's Theorem
The Second Law of Thermodynamics, and Engines of Cognition
Toolbox-thinking and Law-thinking
Local Validity as a Key to Sanity and Civilization
Science Isn't Enough

Part 4 of 6 from the Sequence Highlights.

While far better than what came before, "science" and the "scientific method" are still crude, inefficient, and inadequate to prevent you from wasting years of effort on doomed research directions.

21 min read
When Science Can't Help
Faster Than Science
Science Doesn't Trust Your Rationality
No Safe Defense, Not Even Science
Connecting Words to Reality

Part 5 of 6 from the Sequence Highlights.

To understand reality, especially on confusing topics, it's important to understand the mental processes involved in forming concepts and using words to speak about them.

40 min read
Taboo Your Words
Dissolving the Question
Diseased thinking: dissolving questions about disease
Hug the Query
Say Not "Complexity"
Mind Projection Fallacy
How An Algorithm Feels From Inside
Expecting Short Inferential Distances
Illusion of Transparency: Why No One Understands You
Why We Fight

Part 6 of 6 from the Sequence Highlights.

The pursuit of rationality and that of doing better on purpose, can in fact be rather hard. You have to get the motivation for that from somewhere.

37 min read
Something to Protect
The Gift We Give To Tomorrow
On Caring
Tsuyoku Naritai! (I Want To Become Stronger)
A Sense That More Is Possible

Further Reading

Predictably Wrong
Replacing Guilt
CFAR Handbook