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Hamsa Bastani

@hamsabastani

Prof @Wharton @Penn; machine learning for health & social good; foodie, gamer, homebody

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16.11.2024
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Latest posts by Hamsa Bastani @hamsabastani

When we fit a sigmoid (S-curve) to the exact same dataset by @metr.org, we find it fits the data much better (in-sample) than their exponential, suggesting a compelling alternative. Importantly, the inflection point (June 2025) has already passed.

05.02.2026 15:06 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Great example! I agree autonomous driving suffers the exact same issue

08.01.2026 15:04 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Interesting and definitely related, thank you for sharing!

08.01.2026 06:55 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
The Human-AI Contracting Paradox The integration of state-of-the-art AI tools into professional workflows promises substantial productivity gains. Rather than replacing workers, there is hope t

Barriers to AI adoption isn’t just about technological trustβ€”addressing the economics of attention will be key to achieving human-AI collaboration.

Read the full paper here: papers.ssrn.com/sol3/papers....

07.01.2026 16:35 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

This creates a perverse incentive where employers will:
🚫 Ban the AI entirely to avoid unmonitored risks,
πŸ‘‹ Fire the human, even when human oversight would have improved outcomes, or
πŸ“‰ Adopt a less reliable AI tool, simply because it keeps the human engaged at a lower cost.

07.01.2026 16:35 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

If the AI is right 99% of the time, the human-in-the-loop has almost zero incentive to inspect the outputs. To force them to stay vigilant against that rare mistake, the employer has to pay a massive wage premiumβ€”one that scales inversely with the error probability.

07.01.2026 16:35 πŸ‘ 4 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
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We keep saying: "AI will handle the boring stuff, and humans will supervise." But the problem is--as AI reliability improves, it becomes really hard to motivate a human to conscientiously monitor it.

In a new WP with Gerard Cachon, we describe the "human-AI contracting paradox."

07.01.2026 16:35 πŸ‘ 57 πŸ” 12 πŸ’¬ 4 πŸ“Œ 1

This is not to say AI can't improve education, but it requires careful measurement, experimentation, and evaluation - none of which is happening. The tech industry has put FAR more effort into A/B testing for ad optimization than into building for education.

28.10.2025 19:55 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yet another example - adopting over-hyped AI/EdTech in classrooms without careful thought (especially replacing time with β€œtrained, caring teachers”) is likely to have many negative consequences on kids' learning, motivation, and well-being ⁦https://wired.com/story/ai-teacher-inside-alpha-school/

28.10.2025 19:55 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Opinion | I Teach Creative Writing. This Is What A.I. Is Doing to Students.

Such a great article!! Well worth reading instead of using chatgpt to summarize πŸ˜‚
www.nytimes.com/2025/07/18/o...

21.07.2025 12:32 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thanks!! P.s. just so you know, you're the only reason I post on bluesky πŸ˜‚

25.06.2025 21:34 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Joint work w/ amazing team @obastani.bsky.social, Alp SΓΌngΓΌ, Haosen Ge, Γ–zge KabakcΔ±, & Rei Mariman.

Grateful for thoughtful feedback from Eric Bradlow, Angela Duckworth, Stefan Feuerriegel, Benjamin Lira Luttges, Lilach M., Ananya Sen, Christian Terwiesch, Lyle Ungar, & many others

25.06.2025 16:26 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Out in @pnas.org today!! We ran a field experiment with ~1000 high school students & found:

βœ… GenAI tutoring boosts practice perf
⚠️ But hinders human learning, hurting perf when AI access is removed
πŸ›‘οΈ Safeguards like hint-based help can offset this
www.pnas.org/doi/10.1073/...

25.06.2025 16:26 πŸ‘ 25 πŸ” 9 πŸ’¬ 3 πŸ“Œ 0
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Your Brain on ChatGPT: Accumulation of Cognitive Debt when Using an AI Assistant for Essay Writing Task This study explores the neural and behavioral consequences of LLM-assisted essay writing. Participants were divided into three groups: LLM, Search Engine, and Brain-only (no tools). Each completed thr...

Cool paper using brain imaging to track cognitive load while writing essays! As expected, people under-use their brain when using LLM assistance, but interestingly, they also struggle more when switching back to writing on their own -- AI assistance creates "cognitive debt"
arxiv.org/abs/2506.08872

19.06.2025 13:27 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Research increasingly shows that AI without appropriate guardrails can harm students' long-term learning and engagement. This is not something to be rushed into without careful experimentation and resources, especially when it comes to our young kids.

15.05.2025 01:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Opinion | A.I. Will Destroy Critical Thinking in K-12

"Putting more screens in our classrooms is not going to automatically lead to a smarter, healthier or better-employed population. And parents of all backgrounds need to stand up and shout it now."

www.nytimes.com/2025/05/14/o...

15.05.2025 01:01 πŸ‘ 3 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0
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Stochastic Online Conformal Prediction with Semi-Bandit Feedback Conformal prediction has emerged as an effective strategy for uncertainty quantification by modifying a model to output sets of labels instead of a single label. These prediction sets come with the gu...

Conformal prediction sets are a useful way to capture uncertainty for LLMs & deep learning models. But they're data-hungry! We propose a semi-bandit algo to learn these sets online. Check out our @icmlconf.bsky.social paper: arxiv.org/abs/2405.13268

Work led by Haosen Ge, w/ @obastani.bsky.social

06.05.2025 00:33 πŸ‘ 10 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
How AI Vaporizes Long-Term Learning
How AI Vaporizes Long-Term Learning YouTube video by Edutopia

Great video summarizing our research! AI in education needs to be carefully designed to ensure we support critical thinking & learning

W/ @obastani.bsky.social Alp Haosen Ozge Rei

youtube.com/watch?v=n2W_...

24.04.2025 18:58 πŸ‘ 6 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Workshop on AI & Analytics for Social Good | Smith School Join us at the Workshop on AI & Analytics for Social Good, themed around 'Analytics for Doing Good.' Hosted by the Smith School of Business at the University of Maryland on May 2, 2025, this event gat...

Excited to once again co-organize the 4th Annual Workshop on AI & Analytics for Social Good at UMD on 5/2 with Margret Bjarnadottir, Jessica Clark, Jui Ramprasad, and John Silberholz! Early-career scholars, please submit your "AI for good" work by 2/14:
www.rhsmith.umd.edu/departments/...

24.01.2025 15:37 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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The 2025 Economic Report of the President | CEA | The White House Today, the Council of Economic Advisers under the leadership of Chair Jared Bernstein released the 2025 Economic Report of the President, the 79th report since the establishment of CEA in 1946. The 20...

Excited to see our paper "Generative AI Can Harm Learning" cited in Ch 7 of the 2025 Economic Report of the President: whitehouse.gov/cea/written-...

Paper: papers.ssrn.com/sol3/papers...., co-authored with @obastani.bsky.social, Alp, Haosen, Ozge & Rei

10.01.2025 20:36 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1

Hi folks, I'm new here! πŸ‘‹πŸΎ

16.11.2024 22:44 πŸ‘ 5 πŸ” 0 πŸ’¬ 3 πŸ“Œ 0