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People look confused as they confront various digital obstacles, like bans, rules, and broken hearts.

Community Norms, Participation, and Technology in r/science on Reddit

October 2026

In late May 2026, we sent out surveys to members of the Reddit community, r/science. In this blog post, we’ll […]

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The HAB Challenge: Tending our Human Algorithm Ecosystems

September 2026

How does human behavior change in the presence of AI systems that interact with large groups of people at scale? […]

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Photograph of an assortment of colorful dice

Statistical Inference and (In)correctness

August 2026

GenAI’s deceptively plausible outputs make it dangerously easy to overlook its limitations.

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A cracked camera lens with motes of dust on it, against the backdrop of a cobbled stone road.

New Studies: How Commercial Forces Make Science Less Reliable

July 2026

When people seek guidance from science, it’s often in search of imaginative possibilities with almost-boring reliability. And one evening in […]

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People look confused as they confront various digital obstacles, like bans, rules, and broken hearts.

Community Norms, Participation, and Technology in r/AmItheAsshole on Reddit

July 2026

A little over a month ago, in June 2026, we sent out surveys to members of the Reddit community, r/AmItheAsshole. […]

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Participants at the 2026 Summer Institute in Computational Social Science in Kenya (Photo: Terry Boke, CC BY-SA 4.0)

Bridging the Wikimedia Movement and Computational Social Science

June 2026

How can scientists support the global movement for access to knowledge while also making discoveries about our social world?  This […]

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Reliable GenAI and Perpetual Motion

May 2026

Researchers rushing to adopt AI without understanding the limitations risk committing scientific misconduct.

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Boston Harbor, viewed from the Harbor Islands

Growing the Fires of Imagination at the Radcliffe Institute Next Year

May 2026

I have good news to share; I’ve been selected for a fellowship at the Radcliffe Institute of Advanced Study at […]

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Map of Wikipedia articles, by Mark Graham at Oxford University

Discovering our Collective Potential with the Science of Wikipedia

March 2026

This weekend, Sarah Gilbert and I were honored to give a plenary talk at Wikipedia Day NYC, a celebration of […]

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A visualization with colored layers stacked on top of each other. Each layer starts at the bottom, grows in height, and fades out. Several prominent peaks stand out, and most are colored blue/promoted. A cutout diagram of one region shows closely stacked non-promoted posts, and a promoted post with a red portion before its promotion and a blue region during.

Visualizing the Algorithm

December 2025

At CAT Lab, data visualizations and data art build intuition and encourage us to look at online communities from new perspectives.

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