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logical fallacies (11)
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study critique (272)
book review (227)
AI (113)
economics (105)
effective altruism (105)
debate (93)
education (93)
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forecasting (91)
prediction markets (90)
politics (89)
science (85)
AI safety (84)
media criticism (76)
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rationality (76)
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psychology (72)
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highlights from the comments (68)
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domain: slatestarcodex.com (1130 posts)
domain: wikipedia.org (902 posts)
domain: astralcodexten.com (571 posts)
domain: lesswrong.com (495 posts)
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domain: nih.gov (334 posts)
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11 posts
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Your Attempt To Solve Debate Will Not Work

Scott argues that projects attempting to "solve debate" through argument mapping or similar technologies are fundamentally doomed because real arguments don't work like logical syllogisms, people don't actually want structured debates, and there's no evidence this approach has ever worked.

acx
Apr 28, 2026 1,389 words 507 likes 387 comments Listen · 9 min Read Read Opened Opened

Come On, Obviously The Purpose Of A System Is Not What It Does

Scott critiques the phrase 'the purpose of a system is what it does' by showing how it confuses outcomes with intentions and leads to absurd or paranoid conclusions.

acx
Apr 11, 2025 1,028 words 524 likes 705 comments Listen · 9 min Read Read Opened Opened

Desperately Trying To Fathom The Coffeepocalypse Argument

Scott Alexander dissects and criticizes a common argument against AI safety that compares it to past unfulfilled disaster predictions, finding it logically flawed and difficult to steelman.

acx
Apr 25, 2024 2,533 words 177 likes 863 comments Listen · 14 min Read Read Opened Opened

Unspoken Ground Assumptions Of Discussion

Scott Alexander explores five unspoken assumptions in discussions that can lead to misunderstandings and logical fallacies when not clarified.

ssc
Aug 3, 2014 903 words 0 likes 61 comments Read Read Opened Opened

Effects Of Vertical Acceleration On Wrongness

The author humorously responds to a common argument against evidence-based medicine, suggesting a parachute experiment with a twist.

ssc
Feb 20, 2014 56 words 0 likes 16 comments Read Read Opened Opened

The Logician And The God-Emperor

A logician performs a great deed, and the God-Emperor offers him a reward: the plain eldest daughter who will inherit the throne, or the beautiful youngest who will inherit nothing.

ssc
Dec 4, 2013 290 words 0 likes 83 comments Read Read Opened Opened

Arguments From My Opponent Believes Something

Scott Alexander outlines and criticizes ten fallacious argument styles that misrepresent an opponent's beliefs, demonstrating how they can be used to unfairly attack any position.

ssc
Jun 13, 2013 806 words 0 likes 43 comments Read Read Opened Opened

Proving Too Much

Scott Alexander explores the 'Proving Too Much' fallacy as an efficient tactic to quickly dismantle complex arguments, particularly those using Dark Arts techniques.

ssc
Apr 13, 2013 742 words 0 likes 53 comments Listen · 6 min Read Read Opened Opened

Cleaning up the "Worst Argument" essay

Scott Alexander introduces 'Guilt by Association' as a fallacy where people judge things negatively based on category membership rather than actual shared features, using examples like calling MLK a 'criminal' or abortion 'murder' to illustrate when this reasoning fails.

lw
Sep 6, 2012 1,683 words 20 likes 57 comments Read Read Opened Opened

The noncentral fallacy - the worst argument in the world?

Scott proposes the "noncentral fallacy" as a candidate for the worst argument in the world: applying emotional reactions from archetypal category members to non-archetypal examples, illustrated through examples like calling Martin Luther King Jr. a "criminal."

lw
Aug 27, 2012 2,283 words 459 likes 1,773 comments Read Read Opened Opened

Defense Against The Dark Arts: Case Study #1

Scott identifies five logical fallacies in a popular anecdote about Steve Jobs rejecting Indian spirituality, arguing it succeeded through tribal appeal rather than logical merit, and uses it as a case study for why careful argument analysis must become automatic.

lw
Mar 28, 2009 1,992 words 150 likes 54 comments Read Read Opened Opened
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