Brett Hollenbeck
@bretthollenbeck.com
840 followers 450 following 140 posts
Associate professor at UCLA Anderson, works on IO, marketing etc. Temporary Parisian. bretthollenbeck.com
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bretthollenbeck.com
Some news: I will be spending this entire 2025-26 academic year located in Paris, visiting the local universities and participating in the research community here.

If you work in Paris or are just passing though in the next year, please reach out, I'd be happy to meet up! PhD students especially!
Reposted by Brett Hollenbeck
fluxblog.bsky.social
ENO UNIVERSE playlist! A retrospective of Brian Eno’s body of work from 1972-1995 including his solo rock and ambient records and his collaborations with Bowie,Talking Heads, U2, Devo, Fripp, etc! All links and annotated tracklisting in the newsletter issue fluxblog.substack.com/p/fluxblog-5...
Fluxblog 566: ENO UNIVERSE
A retrospective of Brian Eno's music 1972-1995
fluxblog.substack.com
Reposted by Brett Hollenbeck
joshgans.bsky.social
The videos from the NBER Economics of Transformative AI conference are well worth your time. www.nber.org/conferences/...
Economics of Transformative AI Workshop, Fall 2025
www.nber.org
bretthollenbeck.com
Quite possible, although there are many types here.
bretthollenbeck.com
It looks like he didn't share it on Bluesky, so I will. @afinetheorem.bsky.social has written an excellent review article covering 7 recent books on the economics of AI that serves as an excellent overview of this topic. Highly recommended!

kevinbryanecon.com/BryanAIBookR...
bretthollenbeck.com
I can confirm that the cuisine in France is on another level
bretthollenbeck.com
While 2022-2023 was an early period for AI, these data give us the first broad look at how online behavior is changing as consumers adopt LLM tools. Our results suggest that LLMs may pose a thread to search engines and to education websites, as well as to the long-tail of niche content producers.
bretthollenbeck.com
We study overall traffic and find LLM adopters make fewer visits to smaller (low traffic) websites and receive fewer ad exposures. We also show that education-related websites are particularly affected and find mixed effects on UGC content platforms (Reddit, StackOverflow, Wikipedia).
bretthollenbeck.com
We use a difference-in-difference design comparing trends in behavior of early LLM adopters to trends of later adopters. Our primary finding is that adoption of LLMs (such as ChatGPT) leads to a significant drop in online search, particularly longer queries and queries phrased as questions.
bretthollenbeck.com
🚨*New research*🚨

Together with Tai Lam, Nicolas Padilla, and Anja Lambrecht: we study the impact of LLMs on user behavior across the web. We use a large and detailed panel of user-level online browsing from 2022 – 2023 and study how consumers' behavior changes after they adopt AI tools.
Reposted by Brett Hollenbeck
cari.bsky.social
saw this tweet and checked my calculator history and I'm losing it
tweet from @glamdemon2004

Feeling self conscious after learning that there’s a history feature on the calculator app… I’m scrolling through it thinking yeah I probably should have known that one 100+100
200

10x10
100 66x1 
66 7x3
21
bretthollenbeck.com
The GOAT
earlymodernjohn.bsky.social
A huge moment -- Melvyn Bragg steps down from In Our Time after over a quarter of a century. What a programme and what a legacy! Just a model for how to make great, clever, engaging radio, and a twenty-seven-year experiment that proves there's a huge global audience for smart, scholarly programming.
Melvyn Bragg decides to step down from presenting In Our Time
After 26 years on the programme, the legendary presenter bids farewell to the series
www.bbc.co.uk
Reposted by Brett Hollenbeck
afinetheorem.bsky.social
Eight rules to regain trust in universities. All can be done today. They're absolutely not the core beliefs about the role of the university for some faculty right now, but are essential if we're to contribute to the trusted production and diffusion of knowledge. kevinbryanecon.com/trust.html
bretthollenbeck.com
Some news: I will be spending this entire 2025-26 academic year located in Paris, visiting the local universities and participating in the research community here.

If you work in Paris or are just passing though in the next year, please reach out, I'd be happy to meet up! PhD students especially!
bretthollenbeck.com
Working for the University of California while also living in France - I have reached truly elite levels of spending time dealing with inscrutable bureaucracy and filling out forms.
Reposted by Brett Hollenbeck
shanedphillips.bsky.social
Killing SB 79 will make Los Angeles a less affordable, less sustainable place -- it'll keep us on the same trajectory we've been on since SB 827 and SB 50 were killed almost a decade ago. Why is the mayor going out of her way to oppose it? There's no excuse for this.
Reposted by Brett Hollenbeck
Reposted by Brett Hollenbeck
arindube.bsky.social
I can't stress how damaging this is.

Destroys trust in core government statistics.
Reposted by Brett Hollenbeck
wsj.com
The Justice Department fired two of its most senior antitrust enforcers after internal disagreements over how much discretion their division should have to police mergers.
Top Justice Department Antitrust Officials Fired Amid Internal Feud
The dismissals come after disagreements over settling a case against Hewlett Packard Enterprise, which hired allies of President Trump.
on.wsj.com