MacGregor The Bridge Builder

Astral Codex Ten · collected 2026-08-18 · by Scott Alexander commentary
Read the original at Astral Codex Ten ↗

Summary

The article argues that individuals and ideas are often judged unfairly based on a single mistake or action, rather than their overall contributions. MacGregor's complaint from an old Scottish joke is used as a metaphor for this phenomenon, where people focus on one negative aspect instead of recognizing the person's achievements. According to the author, this is particularly evident in the context of "cancel culture," where someone can be defined solely by their worst action and lose reputation or credibility as a result. The article suggests that this type of behavior stifles innovation and progress by creating chilling effects on those who wish to take risks or express dissenting views.
Written by the local model on 2026-08-20, using this article's own text rather than the other coverage of the same event (that is the story summary below).

Signals How these are calculated →

Claims extracted
43
claim-shaped sentences
Uncertain
2%
1 of 43 hedged
Leaning
not scored
needs a local LLM pass
Publisher trust
not scored
Commentary is not rated for newsroom trust
Outlets on this story
1
Education
Narrative spread
1
articles carrying this framing
Analyzed 2026-08-20 · source text last changed 2026-08-20 · how these are computed

AI analysis (generated at analysis time, not now)

Story summary

Scott Alexander, author of the blog Astral Codex Ten, argues that psychology and other fields have been treated unfairly by society. He uses an old Scottish joke about MacGregor, a man who built a bridge but is not recognized for it, to illustrate his point. Instead of acknowledging the positive contributions of these fields, they are only remembered for their mistakes or controversies. For example, psychology has made significant discoveries about the brain and developed useful concepts like extraversion and Pavlovian conditioning, but these achievements are overshadowed by criticism of individual studies or failures in application. This phenomenon is seen in other areas as well, such as effective altruism, where the focus on criticisms rather than successes leads to an unfair reputation for the field as a whole. Alexander suggests that this imbalance is due to a cultural emphasis on criticizing and tearing down, rather than acknowledging and building upon achievements.

Written for “MacGregor's Infrastructure Plan” on 2026-08-31, grounded in this article and the 0 other(s) covering the same event.
Why this leaning score
The article's own words the score was based on. Each is quoted verbatim and was checked against the article text before being stored, so you can find it in the original.
Score +0.75 Confidence high
Leaning score +0.75 for article 1017 (high confidence, 3 verified quotes) · logged 2026-08-25

Story

📰 MacGregor's Infrastructure Plan
Education · 1 article(s) covering the same event. This is the one the site leads with.

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Compared with similar articles

Nothing to compare against. No article is close enough to this one for the pipeline to have linked or judged the pair.

Publisher

Astral Codex Ten · 25 article(s) · 2 correction(s) detected

Commentary. The three signals behind a trust score all measure a newsroom's record with its own reporting, so they are not computed for this source. How trust is scored.

No corrections detected for this publisher. That may mean careful reporting, or simply that nothing has been checked.

Who wrote this

Scott Alexander
25 article(s) here · 1 carrying a prediction
🔮 [This is one of the finalists in the 2026 book review contest, written by an ACX reader who will remain anonymous until after voting is done.
🔮 This year’s survey will probably take 30 - 45 minutes.
2026-08-27 · assertive framing · Take The 2026 ACX Survey
🔮 It’s not necessarily wrong to deprioritize a topic because it vaguely reminds you of something that you have negative affect toward, but I would prefer these people admit they’re dismissing/ignoring it rather than claim to be engaging with it.
🔮 I don’t know, but he may have misinterpreted my original tweet as saying income doesn’t matter at all, in which case this data functions as an effective rebuttal.
2026-08-25 · assertive framing · Re: Re: Re: Pritchard On Liberal Happiness
🔮 [This is one of the finalists in the 2026 book review contest, written by an ACX reader who will remain anonymous until after voting is done.
🔮 Matt says his highest priority colleges that don’t have an organizer yet are MIT, Claremont, Northwestern, Carnegie Mellon, Amherst, Notre Dame, Duke, CalTech, Georgetown, UCLA, Dartmouth, Vanderbilt, Harvard, NYU, Williams, GWU, American University, Rutgers, and UNC Chapel Hill.
2026-08-24 · assertive framing · Open Thread 448
🔮 We (ACX and an effective altruist organization called Nest who are sponsoring this) will give you free advertising and cover your costs.
2026-08-21 · assertive framing · College EA Meetups Everywhere: Call For Organizers
🔮 I remember when arguments about AI were things like “Sure, if you could magically get billions of dollars of compute, and magically scale AI up a thousand times, and magically get rid of hallucinations…” and the whole implausibility hinged on the word “magic”!
🔮 On average, commenters will end up spotting evidence that around two or three of the links in each links post are wrong or misleading.
2026-08-19 · assertive framing · Links For July 2026 (Part 2)
🔮 There are many reasons to believe in such assistance: Napoleon’s rise from Corsican nobody to Emperor and would-be world conqueror was a bizarre deviation from the usual pattern of history.
2026-08-19 · assertive framing · Why I'm Staying Out Of The Substack Religion Debate
Also by Scott Alexander
Open Thread 449
2026-08-31 · Astral Codex Ten
Hidden Open Thread 448.5
2026-08-28 · Astral Codex Ten
Take The 2026 ACX Survey
2026-08-27 · Astral Codex Ten
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 25 articles by Scott Alexander →

Topics

Psychology Scottish the Richard Hanania Conference For Richard Hananias

Subjects

MacGregor PERSON · 5× American NORP · 1× Anthony Weiner PERSON · 1× Congress ORG · 1× Mark Zuckerberg PERSON · 1× Richard Hanania PERSON · 1× Scottish NORP · 1×

Narrative

Even capitalism is a sort of MacGregor - the average kid these days seems to think of it as centrally about Mark Zuckerberg stealing your data, rather than about whether you have electricity at all, or whether you die from cholera at age three because your country is too poor to afford health care.
framing: assertive · carried by 1 article(s) · first seen 2026-08-18
🔮 For a while, the culture enforced conformity just by making sure that the slightest deviation would become 100% of your reputation.
2026-08-20 · Astral Codex Ten
MacGregor The Bridge Builder · assertive framing

Claims (43 extracted, 1 hedged)

A man at the bar is complaining: “You see that bridge there? asserted
You → complain → bridge
I built it with my own hands! asserted
I → build → hands
But do they call me ‘MacGregor The Bridge-Builder’? asserted
they → call → me
And I raised five beautiful children! asserted
I → raise → children
But do they call me ‘MacGregor The Child-Raiser’? asserted
they → call → me
But, you fuck one sheep . . .” asserted
you → fuck → sheep
Has MacGregor been treated unfairly? asserted
MacGregor → treat → ?
This was my complaint in The Beauty Of Settled Science. asserted
This → settle → Science
Psychology laid bare the secrets of the brain - it performs computations through a neural network communicating via electrical impulses intermediated by neurotransmitters crossing synaptic gaps - but do they call it Psychology The Brain-Secret-Revealer? asserted
they → lay → Psychology
Its concepts have turned into the categories that ordinary people use to interpret the world - extraverts, ingroups, the unconscious, IQ, Pavlovian conditioning - but do they call it Psychology The Useful Concept Creator? asserted
they → turn → Psychology
But you do one (thousand) bad social priming studies! asserted
you → do → studies
I had the same complaint in In Continued Defense Of Effective Altruism. asserted
I → have → Altruism
Nobody has the slightest interest in the first-order effects of effective altruism - the hundreds of thousands of lives saved - but you buy one castle! asserted
you → have → castle
Even capitalism is a sort of MacGregor - the average kid these days seems to think of it as centrally about Mark Zuckerberg stealing your data, rather than about whether you have electricity at all, or whether you die from cholera at age three because your country is too poor to afford health care. asserted
country → seem → care
Someone or something spends years, decades, or centuries doing amazing work, winning victory after victory, and it all fades into noise, leaving the topic to be identified entirely with last week’s tawdry scandal. asserted
topic → spend → scandal
You judge someone by their single worst and most embarrassing action. asserted
You → judge → action
At its worst, the victim gets fired, but that part is hardly necessary. asserted
part → fire → worst
For a while, the culture enforced conformity just by making sure that the slightest deviation would become 100% of your reputation. asserted
become → enforce → reputation
Write 100 great blog posts on technical topics, 100 orthodox liberal blog posts, and one blog post expressing where you disagreed with feminism, and for the rest of your life the media would introduce you as “So-and-so, known for his anti-feminist blogging…” asserted
media → write → blogging
Everyone knew this would happen, and it was more than enough to produce chilling effects even without the immediate job loss. asserted
it → know → loss
One time we invited Richard Hanania to a prediction market conference. asserted
we → invite → conference
There were five or six news articles about it, and I can’t remember whether any of them mentioned the word “prediction”. asserted
any → be → word
As far as our reputation was concerned, it had become the Richard Hanania Conference For Richard Hananias. asserted
it → concern → Hananias
You invent an amazing new form of forecasting, incubate multibillion dollar startups, accidentally get thousands of people addicted to sports gambling - but you invite one conservative! asserted
you → invent → conservative
If you allow this sort of thing, you can discredit any individual, field, or movement. asserted
you → allow → individual
Nobody is perfect enough to survive having every good thing they’ve ever done swept to one side while people hyperfocus on a single indiscretion. asserted
people → survive → indiscretion
In this sense, the dynamic that MacGregor points out is antithetical to human freedom. asserted
MacGregor → point → freedom
On the other hand, I do this all the time and don’t feel bad about it. asserted
I → do → it
For example, I assume Anthony Weiner had a rich and diverse career full of many highs, lows, accomplishments, and defeats. asserted
Weiner → assume → highs
He even spent twelve years in Congress - for all I know, he saved taxpayers billions of dollars, or created new social programs to help the neediest among us, or cut red tape to unleash some new form of economic dynamism. asserted
he → spend → dynamism
Maybe he burnt himself out over years, spending late nights hunched over his desk trying to get the text of some bill exactly right, stressed to the point of ulceration about the possibility of failing in his duty to the American people. asserted
text → burn → people
I have no idea. asserted
I → have → idea
All I know about him is that he kept sending pictures of his penis to women who were not his wife, and that one of these times, it had an indirect but significant effect on the 2016 presidential election. asserted
it → know → election
Am I being a bad and unfair person for not caring too much about the rest of his Congressional career, let alone whether he is a good husband or a good father or a dutiful son or loves volleyball or collects stamps or otherwise has a multifaceted life? asserted
he → care → life
If I were to force myself to regard Anthony Weiner as a complex individual - maybe go over his Wikipedia page and carefully read every section except Scandals - it would feel like exactly that: forcing myself. asserted
it → force → myself
Even after doing this (I tried it as an experiment) I’m still unable to think of him in any terms besides “generic Congressman who did various generic Congressman things and then had some extremely nominative deterministic sex scandals”. asserted
who → do → scandals
Apparently he fought hard for health care for 9-11 first responders, good job Representative Weiner, too bad I am going to forget about that literally the moment I stop typing this sentence. asserted
I → fight → sentence
Trying to temper judgment this way feels like violence against my brain’s attention heads, the sort of thing that would turn me into an opinionless zombie. asserted
that → try → zombie
(It’s the same with people who make one nasty barb on Twitter. asserted
who → ’ → Twitter
No matter what else they accomplish, they will always and forever be “that one guy who called my friend an ignorant buffoon that one time”. asserted
who → accomplish → friend
…and 3 more, not listed.
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