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Every measure of how long AI can work is now saturated

Wharton professor Ethan Mollick tells Derek Thompson why AI's economic impact lags its capability, how four paradoxes erode expertise and effort, and why agents break friction-based systems.

Ethan MollickDerek ThompsonSteven StrogatzOpenAIMetaAnthropicAmazonAgentic AIFoundation ModelsConsumer AINew
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Every measure of how long AI can work is now saturated

Recorded 20 October 2026 · 66 min

Ethan Mollick argues that the gap between what AI can do and what the economy shows is a temporary overhang, not a sign of weakness. The real signal is that every benchmark for how long AI can work on a task has saturated, so nobody can say how much work these systems now do.

Mollick is a Wharton professor and author of Coexistence. Derek Thompson interviews him on Plain English. Mollick's explanation for the lag is that jobs and companies were built around human effort, and that structure holds the technology back only for now. His own proposed solutions are mostly stopgaps.

The tension is that each gain carries a loss. AI makes experts stronger while automating the apprenticeship that creates them. It produces proofs nobody understands. It tears through the friction that protected banks, courts and customer service. Thompson presses with hard cases, from weeping mathematicians to AI-written obituaries. Mollick mostly declines to draw lines around what humans keep.

  1. Forecasters keep missing — ▶ 5:56

    Forecasters gave AI a 2.3% chance of winning math Olympiad gold by 2025, and super forecasters gave 1.7% to a Millennium Prize problem being solved. OpenAI now claims to have solved one. Mollick's explanation: "humans don't think in exponentials very well". Capability is a straight line on a log graph, measured on dimensions never measured before: "it's not horsepower", "it's intelligence". Thompson adds that forecasters also erred the other way. Unemployment looks normal, productivity is barely up, and returns concentrate in chip and memory companies.

  2. Why impact lags — ▶ 7:42

    Mollick is surprised at how fast adoption is moving. Entrepreneurs "should never win" because big companies hold the resources but can't change, yet surveys already show ROI. The current phase is single-player: a coder can be 100x more productive but still sits in a two-week sprint, producing "huge amounts of token spend" with no visible impact. Jobs are O-rings: one weak AI spot still needs a human. Companies are garbage cans of problems and solutions with no plan and loops nobody remembers. He calls the lag short-term.

  3. Everyone's lagging — ▶ 13:45

    The biggest source of confusion, Mollick says, is not feeling the exponential. GPT-4 was the best model for about a year while his last book was written. It is now the 181st best, 19 models that run on a phone beat it, and the best model changes every 70 days or less. Users who never try something as hard as Navier-Stokes don't know what the top models can do. The overhang between capability and perception means predictions rest on missing assumptions: "Kind of nobody knows anything."

  4. Expertise paradox and fix — ▶ 15:44

    An Anthropic paper finds that more expertise yields better returns from AI. But expertise was built through apprenticeship, incidental to junior work that AI now does better, so "nobody learns anything anymore". Efficiency must be decoupled from learning. For universities he calls the answer "not that hard". AI as a shortcut destroys learning, while AI as a pushing tutor shows gains in RCTs at Harvard, Stanford and Kenya. Use it outside class and test in class without laptops. He doubts AI literacy: "think step by step" and personas no longer work.

  5. Bright lines against deskilling — ▶ 23:50

    Mollick writes every draft himself and turns to AI only afterwards. Even so, "we will absolutely deskill ourselves every chance we get", because humans avoid effort the way they avoid lifting weights or dieting. Learning needs desirable difficulty. Universities can enforce it with AI-free tests. Companies can't, because the firm also prefers that he not do the work. Choosing which skills to give up, and building incentives to keep the rest, becomes what he calls strategic skill retention.

  6. Knowledge without understanding — ▶ 28:25

    Mathematicians object because proofs weren't the point: each spun off new ideas and gathered a community. Math may become like chess, human achievement in a bounded space. Six months ago humans were obviously needed, and in six months they may not be. AI already produces correct but boring economics papers at scale, though without research taste. Institutions assumed human intelligence was the limiting factor, like the org chart invented in 1855 for railroads. His line: "we're staring a lot of abysses in the face all at once."

  7. When effort stops mattering — ▶ 37:04

    The first things people handed to GPT-4 were wedding vows, children's stories and obituaries. Mollick asked students whether they'd prefer his usual 45-minute recommendation letter or a better two-minute AI one that nobody could detect. Everyone chose two minutes, and one student sent the prompt to use. Court filings, job applications and annual reports were effort barriers. Writers get a reprieve because Claude prose is spottable at a glance. His verdict: "everybody will be mad at you no matter what choice you make."

  8. Human advantages aren't walls — ▶ 40:19

    Mollick names four advantages: deep knowledge, wide knowledge, taste and agency. He refuses bright lines, since an AI doing 50 hours of work is already exercising judgment. Roles are dissolving, with coders doing design, so breadth and liberal arts matter. Taste separates slop from work worth canonizing. Expertise is most under attack short-term. Thompson adds presentation. Mollick concedes explainer videos he once needed a team for now come one-shot from Opus 5.5, and wonders if "not us" is the usual mistake.

  9. Agents tear through friction — ▶ 47:40

    Meta's Muse and OpenAI's Dot work because models can now read undifferentiated piles of email and find problems unprompted. That solves two old problems: nobody knows what to type in the box, and AI wasn't proactive. His agent cancelled an American Airlines subscription and caught a wrong tax number on a permit form. Friction was load-bearing: banks profit from hard savings transfers, and hard customer service limits refunds. Amazon banned Muse. Frontier-model access is a real moat, since Siri can't compete.

  10. Swarms self-organize — ▶ 57:16

    Mollick got a prediction wrong: he thought humans would manage agent swarms. Thousands of agents self-organized to solve Navier-Stokes, sending millions of messages. Studying swarms now requires AIs monitoring AIs. Human organizing is hard because of principal-agent problems, while AI models are the same model, take the same message and pass information freely. No field studies this beyond AI safety. These second-order effects arrive even if AI stopped improving. Swarm attacks so far seek information, like hitting Wells Fargo to learn what a shirt cost.

  11. Measures are saturated — ▶ 1:01:37

    A year ago AI task length moved from 1 hour 3 minutes to 1 hour 7 minutes to 1 hour 25 minutes, the early slope of an exponential. Now every measure of how long AI can work is saturated. Mollick says we are losing track of how much work these systems do, and we are counting on old baffles and firewalls holding. The next fight is over when AIs reach out to us. Even if companies collapse, "the AI utility bubble" won't pop.

The open question. Mollick says the university problem is "not that hard" because schools control testing. He offers no equivalent for companies, where he admits efficiency rewards deskilling. His claim that deep knowledge, wide knowledge, taste and agency will grow in value also sits badly with his own admissions. Expertise is the most under attack, and humans were clearly needed six months ago but may not be in six more. Watch whether firms pay for skill retention at all.

Watch the full video at https://www.youtube.com/watch?v=zthE5Oa8mlM.

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