Ethan Mollick

@emollick404k followers

Professor @Wharton studying AI. New book, Co-Existence, coming October 20. Preorder here: Substack:

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1Mar 14, '23🤯🤯Well this is something else. GPT-4 passes basically every exam. And doesn't just pass... The Bar Exam: 90% LSAT: 88% GRE Quantitative: 80%, Verbal: 99% Every AP, the SAT...120×10.7M19k3.7k3.7k
2Nov 27, '23It isn't just AI generated text that is starting to bleed over into search results. The main image if you do a Google search for Hawaiian singer Israel Kamakawiwoʻole (whose versio79.4×7.1M15k2k1.2k
3May 13, '24Full analysis from a single command. Nice.65.9×5.9M6.5k7244.9k
4Apr 10, '23This is quite the paper! It gave 25 AI agents motivations & memory, and put them in a simulated town. Not only did they engage in complex behavior (including throwing a Valenti62.9×5.6M16k3.1k8.2k
5Mar 30, '23GPT-4 is so close to creating a universal educational simulator based on just a paragraph prompt. Take a look at this simulated negotiation, with grading and feedback. Prompt: "I w56.7×5.1M18k1.9k13k
6May 21, '23Noise is a secret destroyer of productivity. It is secret because it impacts cognition, not effort, so we don’t notice, but a 10db noise increase (from a dishwasher to a vacuum) lo56.5×5M23k5.1k7.8k
7Feb 19, '23Some lessons of the insane past 4 days of generative AI, as someone who had access to Bing during and after the "Sydney" era. (Trying this as a long tweet rather than a thread...) 56.3×5M7k1.1k2.8k
8Jan 22, '23I think we haven't fully absorbed the fact that careful academic papers have found ChatGPT clearly passes some of the most challenging American professional exams: 🩺United States 49.7×4.4M9k1.6k909
9Jan 15, '25New randomized, controlled trial of students using GPT-4 as a tutor in Nigeria. 6 weeks of after-school AI tutoring = 2 years of typical learning gains, outperforming 80% of other 47.9×4.3M11k2.2k5.2k
10Mar 19, '23Not sure how to feel about this as an academic: I put one of my old papers into GPT-4 (broken into into 2 parts) and asked for a harsh but fair peer review from a economic sociolog36.5×3.3M7.7k7982.6k
11Jun 22, '23It gets better: Grand Theft Auto games lower crime rates When a GTA game is released, violence & crime actually drop, as potential criminals stay inside to play (This applies t29×2.6M8.9k1.7k1.4k
12Apr 3, '23You can get much better results out of ChatGPT by forcing it to go through a step-by-step process. An example: ChatGPT is generally really bad at creating interesting puzzles and s28.9×2.6M7.1k7548.5k
13Apr 1, '23The new BloombergGPT AI may be harbinger of the next wave of corporate AI. Current AIs are trained on web data (though firms can add their own training) BloombergGPT is 52% either 26.8×2.4M3.9k5781.9k
14Mar 9, '24The modern economy rests on a single road in Spruce Pine, North Carolina. The road runs to the two mines that is the sole supplier of the quartz required to make the crucibles need26.4×2.3M9.8k1.7k5.2k
15Apr 3, '23I asked GPT-4 to create a mini Harvard Business School case study on Google’s challenges releasing a fictional generative AI along with an instructors note on running the case. It 25.7×2.3M4.8k6004.4k
16Apr 13, '23Chemists give GPT-4 access to chemical databases & control of off-the-shelf lab robotics to create an "Intelligent Agent system capable of autonomously designing, planning &amp25.2×2.2M5k7732.4k
17Apr 8, '23It is pretty amazing that a single prompt can have GPT-4 generate ideas, select one, give the next development steps, create a marketing pitch, and describe a UX. And one more prom23.6×2.1M4.6k4157.1k
18Dec 17, '22Tom Lehrer has put all his songs online (including lyrics & sheet music), and given away all rights to them. The site will only be up for a limited time. This is a very niche t23.5×2.1M11k4.3k1.5k
19Apr 29, '23This 🤯 is a very big 🤯 I have access to the new GPT Code Interpreter. I uploaded an XLS file, no context: "Can you do visualizations & descriptive analyses to help me underst23.2×2.1M5.6k1k3.7k
20May 3, '23The new version of Midjourney that released yesterday shows how far AI has come in making commerical-level images from text alone Here is what you get for "modern outfits inspired 22.5×2M6k8991.4k
21Mar 1, '24| ̄ ̄ ̄ ̄ ̄  ̄| | This can | | hack AI | | now. | | ______ | (\__/) || (•ㅅ•) || / づ Paper showing that ASCII art can get around AI guardrails. Its the return of 1980s hackers.22.4×2M31k3.5k9.8k
22Jan 3, '23Extraordinary new paper from Google on medicine & AI: When Google tuned a AI chatbot to answer common medical questions, doctors judged 92.6% of its answers right … compared to22.2×2M8k1.7k1.9k
23Aug 28, '24Wow, diffusion models (used in AI image generation) are also game engines - a type of world simulation. By predicting the next frame of the classic shooter DOOM, you get a playable19.9×1.8M9.1k1.1k3k
24May 23, '25Huh. Looks like Plato was right. A new paper shows all language models converge on the same "universal geometry" of meaning. Researchers can translate between ANY model's embedding19.3×1.7M13k1.5k10k
25Jun 8, '24Civilization VII was announced today. The Civ series is sort of like Ender’s Game, but for management rather than murdering aliens. Business school students who were good at Civ V 18.4×1.6M9.4k1.3k3.9k
26Jul 18, '24👀Claude handles an insane request: “Remove the squid” “The document appears to be the full text of the novel "All Quiet on the Western Front" by Erich Maria Remarque. It doesn't c17.6×1.6M11k1.2k3.5k
27Apr 17, '23This is very cool: it has become a lot easier to read academic research. If you open a paper in Microsoft Edge (I know, I know), the Bing AI sidebar can read the PDF and you can as17.4×1.6M4.7k5202.9k
28Apr 15, '23Neat! Hey, GPT-4: "Invent a board game using emoji that we can play against each other. Give it a theme from Shakespeare's Tempest. Set up the board and explain the rules & let17.2×1.5M3.4k3501.6k
29Feb 16, '23Wow.17×1.5M4.1k5561.3k
30Dec 11, '23OMG, the AI Winter Break Hypothesis may actually be true? There was some idle speculation that GPT-4 might perform worse in December because it "learned" to do less work over the h15.5×1.4M4.3k6231.2k
31Apr 17, '23The wisdom of the crowd works even if the crowd is totally drunk. This study got undergrads intoxicated & found that while drunk individuals make a lot more errors, the consens14.4×1.3M3.8k530901
32Aug 23, '25It seems like there is not enough of a policy response to the fact that, with 57M miles of data, Waymo’s autonomous vehicles experience 85% less serious injuries & 79% less inj13.9×1.2M5.6k667856
33Sep 8, '24There are now papers showing that the migration of academic communities from Twitter to other social media sites mostly failed. But they never fully returned to Twitter either. I w13.5×1.2M3.3k780885
34Feb 16, '23It is already clear that Bing AI is a big a leap over ChatGPT as ChatGPT was over the old GPT-3 model It generated paper ideas based on my previous papers, found gaps in the litera13.2×1.2M5.1k7002.2k
35Sep 8, '23In a new paper showing that AI comes up with more effective prompts for other AIs than humans do, there is this gem that shows how weird AIs are... The single most effective prompt13×1.2M4.1k6072.4k
36Jun 18, '23Whatever bad faith arguments you see on Twitter today, Schopenhauer already thought of how to use them 115 years ago as part of his 38 Stratagems to unfairly win an argument. Twitt11.5×1M3.8k7643k
37Jan 24, '22Here are the lighthouses of Europe. The map is even better than it might seem at first glance: the colors are the real colors, the patterns are the real patterns, and the size of t11.3×036k8.8k2.9k
38Sep 27, '24It is amazing how the industry came together to invent a universal USB-C connector and then decided to instead make it all a giant mess.10.4×930k12k1.2k2.6k
39Oct 10, '25This paper shows that you can predict actual purchase intent (90% accuracy) by asking an LLM to impersonate a customer with a demographic profile, giving it a product & having 10.2×904k7.6k6788.8k
40Jun 4, '21One of my favorite scientific figures is this one of the entropy levels of 100 world cities by the orientation of streets. The cities with most ordered streets: Chicago, Miami, &am10.0×030k6.5k4.1k
41Feb 7, '25This paper is wild - a Stanford team shows the simplest way to make an open LLM into a reasoning model. They used just 1,000 carefully curated reasoning examples & a trick wher9.9×877k8.9k9356.7k
42Nov 4, '24"Hey Claude with computer use, watch this construction site video & write up things you see that dangerous or good, create a spreadsheet of critical issues to address" (sped up9.3×832k5.6k6184.5k
43Jan 21, '25$500B committed towards AGI, still no articulated vision of what a world with AGI looks like for most people. Even the huge essay by the CEO of Anthropic doesn't paint a vivid pict9.3×831k6.1k3681.6k
44Sep 2, '24Air conditioning lets you use your brain more Students do worse when its hot. Over 13 years in NYC alone, "upwards of 510,000 exams that otherwise would have passed likely received9.2×820k6.3k9702.1k
45Aug 1, '23In this study, AI was more accurate than two thirds of radiologists, yet when radiologists had AI help their diagnoses did not improve. Why? Humans ignored the AI’s advice when it 9.2×815k3.4k656993
46Jun 27, '23Having a little too much fun stressing out Bing/GPT-4 using its new ability to recognize images...8.2×728k4.5k605648
47Mar 4, '23Bing, write the first chapter of Genesis as a corporate memo.7.9×700k4.5k692599
48Oct 14, '24You really, really should not trust audio clips anymore Even a couple months ago, it used to take a commercial service to clone a voice. No more. Here is me creating a voice clone 6.8×606k4.6k5484.6k
49Nov 17, '23I have no idea why Sam Altman was fired and, from the 10,000 other posts on the topic, nobody else does either. As a result, no one knows what this means for OpenAI or AI in genera6.6×585k4.6k384169
50Feb 8, '25It always stuck me as interesting that the very first things people felt comfortable giving over to AI to do for them were the most intimate things: birthday cards, wedding speeche6.1×543k8.5k492663
51Sep 18, '24Google's NotebookLM is the current best "wow this is amazing & useful" demo of AI Here I gave it the entire text of my book, it turned it into a podcast, a study guide, FAQ, ti5.9×528k4.4k5874.3k
52Jan 20, '25The raw chain of thought from DeepSeek is fascinating, really reads like a human thinking out loud. Charming and strange.5.9×527k4.2k4211.8k
53Nov 10, '22If you are out of ideas, go for a walk. This paper found walking (whether outdoors or a treadmill) increased key types of creative thinking for over 80% of undergraduates. The reas5.7×016k3.7k3.6k
54Jul 27, '22Data visualization inspiration thanks to DALL-E: how Rothko, Basquiat, Picasso, and Monet would create an academic chart.5.7×018k3.6k2.4k
55Aug 17, '23Is there a worse recent software design choice than Zoom randomly forcing you to install updates before you join? There’s 200 people waiting on a call for a session to start and I 5.7×503k4.2k17468
56Apr 1, '24This is just science - go for a walk. This paper found walking (whether outdoors or a treadmill) increased key types of creative thinking for over 80% of undergraduates. The reason5.5×492k3.4k6301.7k
57Nov 26, '22If you last checked in on AI image makers a month ago & thought “that is a fun toy, but is far from useful…” Well, in just the last week or so two of the major AI systems updat5.4×018k2k3.6k
59Dec 10, '23It’s DOOM’s 30th anniversary. There is a long tradition of trying to make the classic shooter run on inappropriate hardware. So here it is running on a graphing calculator powered 4.9×437k3.9k498263
60Jan 21, '23Avoiding "ums" and "ahs" when you speak may actually make what you say less memorable, since these "speech disfluencies" appear to serve a real purpose. They boost a listener's mem4.8×425k3.2k546676
61Apr 19, '24Randomness is hard to achieve. It is why the security of 10% of the internet is secured by a wall of lava lamps watched by a camera to generate true randomness4.6×411k3.9k419903
62Sep 24, '24If AGI is achievable, the very first people who will know it will be traders who will suddenly find all of their good strategies & trades don’t work anymore, and that an unknow4.6×409k3.6k217538
63Jul 13, '25I am starting to think sycophancy is going to be a bigger problem than pure hallucination as LLMs improve. Models that won’t tell you directly when you are wrong (and justify your 4.3×382k3.3k407488
65Oct 19, '24Half the nitrogen in your body comes from the Haber-Bosch process.3.8×342k3.6k364869
66Oct 23, '24The ability of multimodal AI to “understand” images is underrated. I just took these. Given the first photo Claude guesses where I am. Given the second it identifies the type of pl3.8×341k3.7k230826
67Aug 10, '22Birds give up the complexity of song for volume in noisy places - so they sing louder but less interesting (to both humans & mates) songs in cities. When traffic noise in San F3.8×013k2.7k924
68Dec 2, '22Look, if everyone is worried about students cheating on essays for AI, instructors can just cheat right back. I asked OpenAI to give me an essay question & make a rubric for gr3.5×010k1.4k2.5k
69Jul 19, '22Of all of the “dangers of AI” papers, this is most worrying: AI researchers building a tool to find new drugs to save lives realized it could do the opposite, generating new chemic3.4×08.9k2.2k2.4k
71Jun 5, '21The secret heart of academia is... Wikipedia. In an experiment, this paper found that a single quality Wikipedia article written by chemistry experts influenced the content of 250 3.0×09.4k2.2k967
72Oct 13, '24After today’s SpaceX launch it seems increasingly likely that this man will be Bishop of Mars. According to the 1917 Code of Canon Law, any newly discovered territory is placed und2.9×254k4.8k375449
73Feb 23, '25I got one of those CO2 meters everyone is talking about and was horrified to learn that the CO2 levels in my home and office are fine and that I cannot easily boost my intellectual2.7×238k12k362345
74Nov 5, '22Read these 3 pages. I post them every so often because I think it is some of the tightest, wisdom-packed writing on managing complex systems ever. And almost every system is a comp2.6×04.3k7934.1k
75Nov 22, '22AI has been destroying humans at adversarial games, like Chess or Go, for a bit. But now it is successfully outperforming humans at Diplomacy, the classic multiplayer game that req2.3×06.2k1.1k1.8k
76Oct 30, '22Everyone on social media should know about the Illusory Truth Effect If you see something repeated enough times, it seems more true. Multiple studies show that it works on 85% of p2.2×05.2k1.9k1.3k
77Nov 22, '22🤯Because of Excel, a THIRD of all genetics papers published in top journals have errors, as many genes have names like SEPT2 (the official name of Septin 2), which Excel automatic2.2×06.9k1.2k817
78Jul 28, '22With few exceptions, you should NEVER start generating new ideas in a group - always start with people writing ideas alone and only then move to a group setting. (We've known start2.0×05.3k1k1.7k
79Oct 15, '20A great example of borrowing innovation from one field for another. Doctors at a struggling children's hospital sent videos of their post-surgical hand-offs to Ferrari's F1 pit cre1.8×05k1.6k527
80May 1, '21Tired: startups using machine learning to detect cancer in scans with 90% accuracy. Wired: startups using flocks of pigeons to detect cancer in scans, with 99% accuracy.1.7×05.1k1.4k477
81May 1, '22The skill of surgeons varies tremendously, with bottom quartile surgeons having over 4x as many complications as the best surgeons in the same hospital. And surgeons are keenly awa1.7×05.2k8061.1k
82Jul 8, '22If you want to learn how to learn, these two charts are where you should start. They are the result of a large meta-analysis of study techniques. You should skip the highlighting, 1.7×03.4k7042.2k
83Oct 25, '22I think most people who are not playing with these technologies are way underestimating the speed of advancement in "creative" AIs & how much of an impact that is going to have1.7×05.2k910863
84May 6, '20Wow! Noise is a secret killer of performance. A 10db noise increase (from a dishwasher to a vacuum) drops productivity by 5% - but most people don't notice since it impacts cogniti1.6×04k1.5k623
85Mar 29, '22This is cool: when AI is better than humans, it makes humans better. In 2016, the Go world was shocked when AI beat the best human player. Since then, by playing against AI, profes1.6×05.3k1.1k534
87Sep 11, '22Heavier cars are safer for their drivers, but far deadlier for everyone else. This paper find that for every 1,000 pounds a car weighs over a Toyota Corolla, the chance of killing 1.6×04.5k1.2k476
88Feb 17, '22Shockingly, mindfulness apps really work. This randomized controlled trial on the Headspace app finds it reduces anxiety and depression by a huge .44 standard deviations after 4 we1.6×04.7k6591.1k
89Apr 28, '21Have you ever been asked a brainteaser in a job interview? That’s a big ⚠️ Research at Google found that brainteasers were in no way predictive of job performance. Worse, this pape1.6×04.3k1.1k670
90Jul 16, '22Here’s the chance that a kid born in the bottom 20% of the income distribution eventually reaches the top 20%, depending on where they live. Stark geographic differences & the 1.5×04.1k964895
91Jul 10, '22👀This paper argues that half of venture capital investments are “predictably bad” (causing 10% losses - or $900M out of $9B in investments) because VCs put too much emphasis on fo1.5×03.6k5071.7k
92Oct 7, '21The paradox of our Golden Age of science: more research is being published by more scientists than ever, but the result is actually slowing progress! With too much to read & ab1.5×03.8k1.3k687
93Feb 5, '22The problem with unmoderated online spaces is that a few people will always ruin them. Most conflicts between Reddit can be traced to a handful of active users with a history of an1.5×04.1k1.1k758
94Nov 28, '20Researchers left 17,000 wallets on the streets of 355 cities, some empty, some with money. Contrary to the predictions of economists, people everywhere were more likely to return w1.4×03.7k1k437
95Nov 14, '22How email ruins your life: the expectation that you will always check your email outside of work hours is linked with negative health effects, relationship issues & anxiety. Fo1.3×03.7k863826
96Dec 2, '22Before you get sick of OpenAI tricks, one fun one. You & an android are in front of a judge. The judge tells each of you to say one word. They will then kill whoever they think1.3×03.3k5301.1k
97Dec 13, '20No matter the language, we exchange information at 39 bits/second, suggesting a biological limit. Languages that are lower information density are spoken fast (Spanish & Japane1.3×03.7k1k528
98Jul 31, '24Three things about advanced voice on ChatGPT: 1) It is as good as the demo 2) It is clearly capable of producing a lot more audio (I occasionally get sound effects, etc) but there 1.3×111k76451131
99Apr 28, '22The richest man in the world chose to champion freedom of information, transforming life for many. That man was Andrew Carnegie. The 1,500 cities that he gave libraries (at a cost 1.2×04.1k799305
100Sep 24I just got the first copies of my new book, Co-Existence (out October 20) & they look great! Also, there is a fun pre-order bonus: if you pre-order, you get a code to an AI int1.1×100k74468209
101Dec 5, '22This might be the first OpenAI result that made me actually laugh out loud. Mr. Fluffernutter's rise is indeed quite disturbing.1.1×04.6k384292

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