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Andrés Monroy-Hernández

@andresmh.com
1.7K followers 63 following 25 posts

Associate Professor of Computer Science at @princeton.edu. Co-director of Princeton HCI. Board member at Crisis Text Line. andresmh.com

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Reposted by Andrés Monroy-Hernández
Mayor Zohran Kwame Mamdani @mayor.nyc.gov · 22/09/2026
DoorDash has ripped off more than 260,000 NYC delivery workers. We’re making them pay $131.5 million — the largest worker settlement in City history. This is New York, where hard work pays and greed will cost you.
DoorDash messed up.
They repeatedly left more than 260,000 NYC delivery workers underpaid or paid late, causing them immense stress and financial difficulty.
That's unacceptable.
We've secured a $131.5M settlement from
DoorDash - the largest worker settlement in NYC history and largest delivery worker settlement in
American municipal history.
Every worker will be paid what they are owed, and every company will be forced to abide by the laws of this city.

LOGOS:
The OFFICE of the MAYOR of NYC
NYC Consumer and Worker Protection Mayor Mamdani and Deliveristas representatives stand behind a podium.Mayor Mamdani signs a giant check.Three delivery workers holding a giant fake check for $131.5M.
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Andrés Monroy-Hernández @andresmh.com · 23/09/2026
Proud that our Workers' Algorithm Observatory is partnering with NYC's Dept. of Consumer & Worker Protection and the Workers Justice Project to build tech infrastructure for compliance monitoring of DoorDash, as part of a record $131.5M settlement✊🏽 Press release: www.nyc.gov/mayors-offic...
nyc.gov
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PrincetonHCI @princetonhci.bsky.social · 18/08/2026
Congrats to Varun Rao @samanthadalal.bsky.social, Andrew Schwartz, Amna Liaqat, @dana.witchy.business, and @andresmh.com for getting an 🏅Honorable Mention Award at CSCW 2026 for “FareShare: A Tool for Labor Organizers to Estimate Lost Wages and Contest Arbitrary AI and Algorithmic Deactivations”
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PrincetonHCI @princetonhci.bsky.social · 06/08/2026
🎧 New podcast episode! Our postdoctoral researcher Sohyeon Hwang joins the MED Lab’s Looks Like New podcast to discuss online community governance! Listen here: open.spotify.com/episode/0FKo...
open.spotify.com
Who gets to make the rules online?
Looks Like New · Episode
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Princeton Center for Information Technology Policy @princetoncitp.bsky.social · 23/07/2026
From CITP postdoctoral researcher Marianne Aubin Le Quéré (@mariannealq.bsky.social) - "Do We Ban Social Media? Maybe Not" 👇 psychologytoday.com/us/blog/the-... Aubin Le Quéré is an incoming faculty member at @uofillinois.bsky.social Urbana-Champaign.
psychologytoday.com
Do We Ban Social Media? Maybe Not
We can put online users in the driver's seat instead.
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PrincetonHCI @princetonhci.bsky.social · 15/07/2026
Huge congratulations to our postdoctoral research fellow, Samantha Dalal, on receiving the CRA Trustworthy AI Research Fellowship for Early Career Scholars! Learn more about the 2026–2027 fellows: cra.org/cra-trustwor...
cra.org
CRA Trustworthy AI Research Fellowship for Early Career Scholars
Visit the post for more.
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Romina Mahinpei @rmahinpei.bsky.social · 16/06/2026
Are you a Bluesky user or developer? Princeton's HCI group is conducting an IRB-approved interview study on perspectives about generative AI (genAI) in decentralized social media. Participation includes: • 45–60 min Zoom interview • $30 USD digital gift card Signup: forms.gle/EDmcLnjbamtb...
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Andrés Monroy-Hernández @andresmh.com · 28/05/2026
Congrats to Varun Rao for defending his PhD dissertation, "Toward Human-Centered, Evidence-Based Policy on AI's Labor Impacts."👏 Not only is he the first PhD student I graduate, but probably the first in the field of HCI in Princeton’s 280-year-old history. citp.princeton.edu/events/2026/...
Varun and his committee: Peter Henderson, Manoel Horta Ribeiro, Solon Barocas, me, Arvind NarayananVarun’s opening slide
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Princeton University @princeton.edu · 22/05/2026
A new tool developed by Princeton researchers provides gig workers access to aggregate wage data that companies do not provide — a boon for rideshare labor advocates.
engineering.princeton.edu
Princeton Engineering - New tool drives gig workers toward wage transparency
A new tool developed by Princeton researchers provides gig workers access to aggregate wage data that companies do not provide, a boon for rideshare labor
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Mike Masnick @masnick.com · 23/05/2026
Okay, so I'm two and a half weeks behind, but (ht @timothychambers.net ) this is fantastic and a reminder of why *protocols* matter so much over platforms, no matter what people say about any particular site or service.
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PrincetonHCI @princetonhci.bsky.social · 15/05/2026
Congrats to Julia Ying on completing her undergrad thesis and graduating! 🎉 Her thesis focused on a multi-registry system for decentralized discovery and curation, exploring new power dynamics and trust mechanisms in the OpenCourier protocols. Wishing her all the best for what's next!
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PrincetonHCI @princetonhci.bsky.social · 08/05/2026
Check our new work on OpenCourier — an open protocol for interoperable, worker-owned delivery platforms. By: Yuhan Liu, Varun Rao, @s0hw.bsky.social @cyberlyra.bsky.social and @andresmh.hci.social.ap.brid.gy Thanks to @pcc-global.bsky.social for amplifying it! platform.coop/blog/toward-...
platform.coop
Toward Worker-owned Delivery Platforms with the OpenCourier Protocol | Platform Cooperativism Consortium
The OpenCourier protocol opens up opportunities for delivery workers to own the platforms that manage their livelihoods. We introduce the protocol, welcoming contributors and comments.
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Rude1 Haunted Badness. ⁂ @rude1.blacksky.team · 22/04/2026
Thank you for the opportunity to talk about how Blacksky’s work is making the AT Protocol ecosystem more resilient and how we’re becoming a launch pad for new communities @andresmh.com @s0hw.bsky.social Shout out fellow panelists @masnick.com @lizbarry.cryptoanarchy.network Sujith -> great convo
Princeton Decenter notebook; Rudy Fraser Harvard University lanyard3:00 pm - 4:15 pm
Panel 3: Decentralized Protocols beyond Blockchain
Andrés Monroy-Hernández, Associate Professor of Computer Science, Princeton University
Moderator
Sohyeon Hwang, Postdoctoral Research Associate, Princeton
University
Moderator
Liz Barry, Executive Director, Metagov
Mike Masnick, Founder and Editor, Techdirt Blog
Sujith Nair, CEO, Beckn Labs
Rudy Fraser, Affiliate, Berkman Klein Center for Internet &
Society at Harvard University
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Princeton Center for Information Technology Policy @princetoncitp.bsky.social · 22/04/2026
Try the researcher-created social media feed curator app, Bonsai, right now on Bluesky 📲 getbonsai.org Read about the CITP team 👇
getbonsai.org
Bonsai
Bonsai is a research system that replaces black-box engagement models with intentional, natural language-based curation.
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Andrés Monroy-Hernández @andresmh.com · 17/04/2026
You can't DDoS the Fediverse! The Atmosphere really needs to invest in making it easier to set up a more diversified ecosystem.
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Princeton Center for Information Technology Policy @princetoncitp.bsky.social · 16/04/2026
If you're at #CHI26 like most of CITP this week, be sure to check out postdoctoral researcher Sohyeon Hwang's (@s0hw.bsky.social) presentation "Community Governance and Moderation" on Friday morning 🔻
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Princeton University @princeton.edu · 16/04/2026
📲 Researchers at @princetoncitp.bsky.social have created a social media tool that allows users to build their own social media feeds from scratch. Meet Bonsai. 🌳
bit.ly
Princeton Engineering - What happens when social media users take back control?
Social media feeds are populated by algorithms designed to keep users engaged. Now, researchers at Princeton are studying what happens when users can
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sohyeon hwang @s0hw.bsky.social · 16/04/2026
🏃‍♀️ homestretch! start your last day at #CHI2026 at the "Community Governance and Moderation" 9AM session tomorrow in Room 114 🤠 I'll be presenting our new work envisioning how we can make community-run social media more sustainable through a "community of communities": dl.acm.org/doi/10.1145/...
dl.acm.org
Governing Together: Toward Infrastructure for Community-Run Social Media | Proceedings of the 2026 CHI Conference on Human Factors in Computing Systems
You will be notified whenever a record that you have chosen has been cited.
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Princeton Center for Information Technology Policy @princetoncitp.bsky.social · 15/04/2026
What if you could have more agency over your social media feed? CITP researchers have built Bonsai to explore what happens when users can have that control. Try the app now on @bsky.app! getbonsai.org Team: @manoelhortaribeiro.bsky.social @andresmh.com @mariannealq.bsky.social Omar El Malki
4 people sitting and looking at cell phone screens while smiling
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Andrés Monroy-Hernández @andresmh.com · 14/04/2026
Hey Bluesky friends, please check out and let us know what you think of 🌳 Bonsai, a new tool to create custom Bluesky feeds getbonsai.org Story: www.cs.princeton.edu/news/what-ha... Presented at #CHI2026 by @manoelhortaribeiro.bsky.social and @mariannealq.bsky.social
getbonsai.org
Bonsai
Bonsai is a research system that replaces black-box engagement models with intentional, natural language-based curation.
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ACM Transactions on Computer-Human Interaction (TOCHI) @acmtochi.bsky.social · 10/12/2025
New in #TOCHI FairFare (arxiv.org/pdf/2502.11273) a crowdsourced data tool co-designed with a Colorado rideshare union to audit platform take rates from 76k+ rideshare trips. Authors: Dana Calacci, Varun Rao, Samantha Dalal, Kok-Wei Pua, Andrew Schwartz, Danny Spitzberg, Andrés Monroy-Hernández
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PrincetonHCI @princetonhci.bsky.social · 12/04/2026
Check out upcoming talks from @princetonhci.bsky.social at #CHI2026!
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Andrés Monroy-Hernández @andresmh.com · 20/03/2026
Participate in a fun study from one of our students that involves creating your own daily email digest to catch up on what happened on Bluesky!
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Princeton Center for Information Technology Policy @princetoncitp.bsky.social · 04/03/2026
Thursday 3/5 at 2:00 - 3:00pm Claudia Lo of @wikimediafoundation.org will be a special guest at Professor Andrés Monroy-Hernández's (@andresmh.com) class 🔻 Open to Princeton U faculty, staff, and students. 📍Sherrerd Hall, 306
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Lindsay Popowski @popowski.bsky.social · 29/01/2026
Is the only way we can create algorithms that people understand to make them trivially simple? We argue, no. People can predict the behavior of algorithms that are arbitrarily complex, if and only if they are available, compact and aligned. arxiv.org/abs/2601.18966
A search for factors for algorithm understanding results in multiple terms displayed as documents, including available, compact, and aligned. These are shown to be necessary and sufficient. Other, similar terms are shown in the background faded, like intuitive, rule-based, grounded, modular, linear, decomposable, accurate, symbolic, causal, and personalized.
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Parastoo Abtahi @parastooabtahi.bsky.social · 12/02/2026
A fundamental challenge in human-robot interaction is that capabilities and limitations are often opaque to users. In our upcoming #HRI2026 paper, X-OOHRI, led by the brilliant Lauren Wang, we use AR to make robot capabilities and limits visible during object-oriented interactions 🤖
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Princeton University @princeton.edu · 10/12/2025
A new app developed at @princetoncitp.bsky.social allows researchers to construct a large-scale dataset that aggregates individual worker data across many thousands of rides to shed light on the working conditions of rideshare drivers.
bit.ly
Princeton Engineering - New tool drives gig workers toward wage transparency
A new tool developed by Princeton researchers provides gig workers access to aggregate wage data that companies do not provide, a boon for rideshare labor
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sohyeon hwang @s0hw.bsky.social · 03/12/2025
help spread the word about this campaign - or, if you're able, consider supporting yourself! Bonfire is building a modular toolkit for organizing, mutual aid, open science, and collective decision-making on the open social web. communities choose what gets built: www.indiegogo.com/en/projects/...
indiegogo.com
Bonfire: building blocks for communities on the open social web by Bonfire - Indiegogo
From platforms to communities: a federated social web with shared foundations and co‑created spaces for gathering, care, connection, and stewardship.
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Princeton Center for Information Technology Policy @princetoncitp.bsky.social · 07/11/2025
CITP is hiring for the 2026 academic year. The list of advisors is now available on the CITP Blog: blog.citp.princeton.edu/2025/11/06/c... ▶️ Postdocs ▶️ Visiting Professor ▶️ Visiting Professional ▶️ Emerging Scholars
blog.citp.princeton.edu
CITP Is Now Accepting Applications for the 2026–27 Fellows Program - CITP Blog
Applications are now open for Princeton University’s Center for Information Technology Policy (CITP) 2026-27 Fellows Program. Candidates are encouraged to apply by the start-of-review date of December...
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Andrés Monroy-Hernández @andresmh.com · 01/11/2025
The DeCenter at Princeton is hiring a cohort of postdocs to work on decentralization of power through decentralization of trust. HCI folks encouraged to apply puwebp.princeton.edu/AcadHire/app...
puwebp.princeton.edu
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 16/09/2025
We implemented Bonsai on Bluesky and conducted a two-phase, multi-week study with 15 participants. This deployment allowed us to observe how people used intentional feedbuilding in practice, and how it compared to their experiences with engagement-driven defaults.
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 16/09/2025
In the ranking stage, Bonsai orders the curated content using criteria derived from the user’s stated intent—rather than predicted engagement—making the logic behind feed prioritization transparent and directly aligned with user goals.
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 16/09/2025
In the curating stage, users can apply natural language prompts (e.g., “focus on recent policy updates” or “exclude promotional posts”) to filter and organize the sourced content, ensuring the feed reflects users' goals / preferences. Each prompt is fed into an LLM that individually ranks content.
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 16/09/2025
In the sourcing stage, Bonsai gathers a wide pool of candidate posts aligned with user goals. Users can refine this stage by editing sources (adding or removing accounts, hashtags, or feeds) to shape where their feed draws content from.
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 16/09/2025
In the planning stage, users express their goals in natural language (e.g., “updates on AI policy” or “posts from close colleagues”). Bonsai translates these goals into structured representations that guide the subsequent sourcing, curating, and ranking of content by providing initial suggestions.
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 16/09/2025
With Bonsai, users can articulate what they want from their feeds (e.g., tracking research, staying informed on a policy area, or connecting with a community) and the system procedurally builds a feed that reflects those intentions in four steps, which we discuss below.
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 16/09/2025
Bonsai sits within a broader debate on recommender systems. While TikTok or Meta optimize (mostly) for attention capture, Bonsai explores what feeds look like when personalized for user intent. Under our taxonomy, it explores the design space of "intentional" and "personalized" feeds!
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 16/09/2025
Social media feeds today are optimized for engagement, often leading to misalignment between users' intentions and technology use. In a new paper, we introduce Bonsai, a tool to create feeds based on stated preferences, rather than predicted engagement. arxiv.org/abs/2509.10776
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Andrés Monroy-Hernández @andresmh.com · 10/09/2025
Finally, @princeton.edu is on a decentralized social media platform! 👏👏
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sohyeon hwang @s0hw.bsky.social · 12/08/2025
I'm co-organizing #CSCW NE, an in-person regional gathering for people in Northeast America, alongside some folks from Stevens, Rutgers, and Princeton. If you want to come hang out (especially if you can't make it out to the full conference in Bergen this year), RSVP at cscw-ne.hci.social!
A faded etching of the Hudson River from Hoboken is overlaid with the following text: CSCW Northeast 2025, in-person regional gathering. Friday, October 3, 2025, 10AM-4:30PM at University Center Complex, Stevens Institute of Technology. RSVP: cscw-ne.hci.social

The logos of HCI at Stevens, Princeton HCI, and Rutgers University are on the right-hand side.
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 22/07/2025
🚨 Study alert! We've developed a prototype that enables you to create personalized social media feeds using natural language rules and import them into Bluesky. Join our study to try out the tool, give us your feedback, and earn a $50 gift card! Sign up: forms.gle/MkSGKzxDfBEc... Please share :)
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Andrés Monroy-Hernández @andresmh.com · 22/07/2025
One of the great things about decentralized social media is that researchers can experiment with new ideas. Please help science and apply to be part of this study that one of our students is doing to make it easier for anyone to create sophisticated custom Bluesky feeds. Spread the word too! 🙏
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hailey @hailey.at · 05/06/2025
"huh is something going on?" "oh"
on one side, tesla stock falling while trump and elon beef. on the other side, request rates to a bsky service rapidly increasing
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Sunnie S. Y. Kim ☀️ @sunniesuhyoung.bsky.social · 07/05/2025
📢 I successfully defended my PhD dissertation! Huge thanks to my committee (Olga @andresmh.com @jennwv.bsky.social @qveraliao.bsky.social @parastooabtahi.bsky.social) & everyone who supported me ❤️ 📢 Next I'll join Apple as a research scientist in the Responsible AI team led by @jeffreybigham.com!
Sunnie standing in front of her presentation celebrating the successful defense 🎉 Vera, Andrés, Sunnie, Olga, and Jenn (on Sunnie’s laptop screen) celebratingGroup photo of everyone who joined Sunnie’s dissertation defenseLauren, Sunnie, and Jeff (photo taken at CHI 2025)
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Princeton Center for Information Technology Policy @princetoncitp.bsky.social · 16/04/2025
How do you teach students practical ethics—not just in #philosophy class, but in a #technology class? CITP's Steven Kelts is tackling this in Princeton #CS classrooms with hands-on, real-world exercises tailored for engineering courses 🧠 Read more: cs.princeton.edu/news/learnin... #AI #Ethics #Tech
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Princeton Center for Information Technology Policy @princetoncitp.bsky.social · 08/04/2025
From applied #scientist at Amazon to #student & #researcher at Princeton - a new "Meet the Researcher" has dropped! Meet Varun Rao 👋 "I realized that not a lot of pressing challenges in computer science have a purely technical solution anymore, and they deserved interdisciplinary approaches." 🔗 🔽
blog.citp.princeton.edu
Meet the Researcher: Varun Rao - CITP Blog
Varun Rao is Ph.D. candidate in the Department of Computer Science and the Center for Information Technology Policy at Princeton University. Rao recently sat down with Princeton undergraduate student ...
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Princeton Center for Information Technology Policy @princetoncitp.bsky.social · 28/03/2025
NEW Blog Post! Check out how CITP researchers are making real-world impact on the side of workers. Read "Revolutionizing Rideshare: Researchers Develop FairFare App to Empower Workers" 🔻 🙌 @andresmh.com @samanthadalal.bsky.social @dana.witchy.business blog.citp.princeton.edu/2025/03/25/r...
blog.citp.princeton.edu
Revolutionizing Rideshare: Researchers Develop FairFare App to Empower Workers - CITP Blog
On February 1, 2025, Colorado’s Transportation Network Transparency Bill (SB24-075) took effect. CITP scholars, along with their colleagues, played a key role in supporting advocacy around the bill by...
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Andrés Monroy-Hernández @andresmh.com · 15/02/2025
I'm on a panel about the future of social technologies at #AAAS to talk about the decentralized social media, e.g., Bluesky, for scientists. Why do you think scientists should or should not be on Bluesky? 👨‍🔬
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IFTAS - Independent Federated Trust & Safety @iftas.org · 08/02/2025
Thank you for the support around our recent announcement about our lack of funding. Here’s some more detail on what our funding shortfall means for IFTAS and the communities we support. If we cannot secure immediate funding, IFTAS will need to: 1/8
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