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Why be optimistic?

Top voices on optimism: Sam Altman, Sundar Pichai, Elon Musk, Hannah Ritchie and 12 others.

17 dated claims from 16 people · 4 views · most recent 27 Sept 2026. Every line below links to the person’s own words.

The views

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  1. Optimism is what gets things built

    David Heinemeier HanssonSam AltmanJason EvanishSundar Pichai

  2. The world is doing better than people feel, and pessimistic forecasts keep losing

    Hannah RitchieAdam FrankCasey HandmerRamez Naam

  3. Optimism is a bias: plans and forecasts keep running too hot

    Noah SmithRamez NaamTim SweeneyRodney BrooksElon MuskHolden Karnofsky

  4. Optimism can be a privilege, or a cover for someone else's plan

    Phillips P. OBrienTom MacWrightJosh Collinsworth

A viewour reading

Optimism is what gets things built

5 claims filed here, newest first — each in the words of whoever said it.

Online discourse is dominated by malcontents and their neuroses, while the real world is full of people leaning into the future with optimism.

  1. David Heinemeier Hansson Creator of Ruby on Rails, CTO of 37signals For every reddit doomer, there's a hundred quiet bloomers. Online discourse is dominated by malcontents and their neuroses. But the real world is full of people leaning into the future with optimism. @dhh on Xx.com · 24 Sept 2026
    Their wordsFor every reddit doomer, there's a hundred quiet bloomers. Online discourse is dominated by malcontents and their neuroses. But the real world is full of people leaning into the future with optimism.

    ↗@dhh on Xx.com

    24 Sept 2026

Show all 5 claims

It is better to be an optimist who works hard than a pessimist who writes about why things will not work, because no amount of such essays moves society forward.

  1. Sam Altman Co-founder and CEO of OpenAI i would rather be an optimist and work hard than a pessimist posting about why things won't work. it's much more difficult and the most likely path is failure, but society fails if people don't try. no amount of "it will never work" essays will drive society forward. @sama on Xx.com · 4 Aug 2026
    Their wordsi would rather be an optimist and work hard than a pessimist posting about why things won't work. it's much more difficult and the most likely path is failure, but society fails if people don't try. no amount of "it will never work" essays will drive society forward.

    ↗@sama on Xx.com

    4 Aug 2026

Building a startup requires enough optimism to see past a problem toward a future solution that makes things better.

  1. Jason Evanish Founder and CEO of Get Lighthouse When you're building a startup, you have to be optimistic. You need to see a problem and want to fix it so badly that you can look to the future and see a solution you create that makes everything better. “Not our biggest problem.” A painful startup lesson.jasonevanish.com · 16 Sept 2025
    Their wordsWhen you're building a startup, you have to be optimistic. You need to see a problem and want to fix it so badly that you can look to the future and see a solution you create that makes everything better.

    ↗“Not our biggest problem.” A painful startup lesson.jasonevanish.com

    16 Sept 2025

Optimism beats pessimism in the face of unknown potential

  1. David Heinemeier Hansson Creator of Ruby on Rails, CTO of 37signals You don't have to throw away your critical reasoning to accept that in the face of unknown potential, optimism beats pessimism American hypeworld.hey.com · 17 Jul 2025
    Their wordsYou don't have to throw away your critical reasoning to accept that in the face of unknown potential, optimism beats pessimism

    ↗American hypeworld.hey.com

    17 Jul 2025

He is an optimist about humanity's future because he would almost always rather have been born now than at any earlier time.

  1. Sundar Pichai CEO of Google and Alphabet I always ask myself the question, would you have been born now or any other time in the past? I most often, not most often, almost always would rather be born now. Sundar Pichai: CEO of Google and Alphabet | Lex Fridman Podcast #471youtube.com · 5 Jun 2025 · 1:50:04 into the video
    Their wordsI always ask myself the question, would you have been born now or any other time in the past? I most often, not most often, almost always would rather be born now.

    Where this was said

    Watch from 1:50:04 plays here

    ↗Sundar Pichai: CEO of Google and Alphabet | Lex Fridman Podcast #471youtube.com

    5 Jun 2025 · video · 2h 12m · spoken · official transcript

A viewour reading

The world is doing better than people feel, and pessimistic forecasts keep losing

3 claims filed here, newest first — each in the words of whoever said it.

People are optimistic about their own lives and pessimistic about the world, because they judge their life on everything and the world on the last few headlines.

  1. Hannah Ritchie Data scientist at Our World in Data and author of Not the End of the World When someone is asked to reflect on their own life, they draw on a wide range of experiences. When people are asked about “the world”, they recall a very small number of recent events (the availability bias). Many people are individually optimistic but think the world is falling apartsustainabilitybynumbers.com · 13 Jan 2026
    Their wordsWhen someone is asked to reflect on their own life, they draw on a wide range of experiences. When people are asked about “the world”, they recall a very small number of recent events (the availability bias).

    ↗Many people are individually optimistic but think the world is falling apartsustainabilitybynumbers.com

    13 Jan 2026

Show all 3 claims

The burden of proof about alien civilisations has shifted: it is now on the pessimists.

  1. Adam Frank Professor of astrophysics at the University of Rochester But I felt like what this paper showed was that the burden of proof is now on the pessimists. So, that's why we called it the pessimism line. Throughout history, there's been alien pessimists and alien optimists, and they've been yelling at each other, that's all they had to go with. Adam Frank: Alien Civilizations and the Search for Extraterrestrial Life | Lex Fridman Podcast #455youtube.com · 22 Dec 2024 · 0:53:55 into the video
    Their wordsBut I felt like what this paper showed was that the burden of proof is now on the pessimists. So, that's why we called it the pessimism line. Throughout history, there's been alien pessimists and alien optimists, and they've been yelling at each other, that's all they had to go with.

    Where this was said

    Watch from 0:53:55 plays here

    ↗Adam Frank: Alien Civilizations and the Search for Extraterrestrial Life | Lex Fridman Podcast #455youtube.com

    22 Dec 2024 · video · 3h 26m · spoken · official transcript

Solar has got cheaper faster than even its most optimistic forecasters expected.

  1. Casey Handmer Physicist, formerly at NASA's Jet Propulsion Laboratory A number of commentators have consistently predicted that solar cost improvements will level out “this year” since about 1990, and yet if anything deployment, cost decline, and the learning rate have only improved. Radical Energy Abundancecaseyhandmer.wordpress.com · 11 Oct 2023
    Their wordsA number of commentators have consistently predicted that solar cost improvements will level out “this year” since about 1990, and yet if anything deployment, cost decline, and the learning rate have only improved.

    ↗Radical Energy Abundancecaseyhandmer.wordpress.com

    11 Oct 2023

  2. Ramez Naam Author and clean-energy investor who has been publishing… In short solar prices have dropped faster and lower than almost anyone has expected. Solar's Future is Insanely Cheap (2020)rameznaam.com · 14 May 2020
    Their wordsIn short solar prices have dropped faster and lower than almost anyone has expected.

    ↗Solar's Future is Insanely Cheap (2020)rameznaam.com

    14 May 2020

A viewour reading

Optimism is a bias: plans and forecasts keep running too hot

6 claims filed here, newest first — each in the words of whoever said it.

Benchmarks and forecasts for AI capabilities are significantly over-optimistic compared to real-world AI research performance.

  1. Noah Smith Economics writer; author of the Noahpinion newsletter A four-hour benchmark horizon is about 16 times longer than OpenAI’s research horizon. AI 2027’s 11-hour forecast is about 44 times longer. Of course, the tasks being performed by researchers at OpenAI aren’t the same as those in the METR benchmark. So we should expect some discrepancy. This, however, goes well beyond that. Actual AI research at OpenAI is an order of magnitude or more harder than metrics, benchmarks, or forecasts suggest. Where’s the “intelligence explosion”?noahpinion.blog · 27 Sept 2026
    Their wordsA four-hour benchmark horizon is about 16 times longer than OpenAI’s research horizon. AI 2027’s 11-hour forecast is about 44 times longer. Of course, the tasks being performed by researchers at OpenAI aren’t the same as those in the METR benchmark. So we should expect some discrepancy. This, however, goes well beyond that. Actual AI research at OpenAI is an order of magnitude or more harder than metrics, benchmarks, or forecasts suggest.

    ↗Where’s the “intelligence explosion”?noahpinion.blog

    27 Sept 2026

Show all 6 claims

Benchmarks and forecasts for AI capabilities may be substantially over-optimistic compared to real-world research performance.

  1. Ramez Naam Author and clean-energy investor who has been publishing… A four-hour benchmark horizon is about 16 times longer than OpenAI’s research horizon. AI 2027’s 11-hour forecast is about 44 times longer. Of course, the tasks being performed by researchers at OpenAI aren’t the same as those in the METR benchmark. So we should expect some discrepancy. This, however, goes well beyond that. Actual AI research at OpenAI is an order of magnitude or more harder than metrics, benchmarks, or forecasts suggest. Where’s the “intelligence explosion”?rameznaam.com · 27 Sept 2026
    Their wordsA four-hour benchmark horizon is about 16 times longer than OpenAI’s research horizon. AI 2027’s 11-hour forecast is about 44 times longer. Of course, the tasks being performed by researchers at OpenAI aren’t the same as those in the METR benchmark. So we should expect some discrepancy. This, however, goes well beyond that. Actual AI research at OpenAI is an order of magnitude or more harder than metrics, benchmarks, or forecasts suggest.

    ↗Where’s the “intelligence explosion”?rameznaam.com

    27 Sept 2026

The industry is too optimistic about AI for video, and the consistency problem will not simply be remedied.

  1. Tim Sweeney Founder and CEO of Epic Games I think a lot of people in the industry are overly optimistic about the rate of progress of AI for video and other things like that. The real problem is consistency, like spurting out an image is really high quality, but with video over the course of seeing all the AI approaches have consistency issues going from one place to another. I don't think that those will just be remedied easily. Tim Sweeney: Fortnite, Unreal Engine, and the Future of Gaming | Lex Fridman Podcast #467youtube.com · 30 Apr 2025 · 1:55:23 into the video
    Their wordsI think a lot of people in the industry are overly optimistic about the rate of progress of AI for video and other things like that. The real problem is consistency, like spurting out an image is really high quality, but with video over the course of seeing all the AI approaches have consistency issues going from one place to another. I don't think that those will just be remedied easily.

    Where this was said

    Watch from 1:55:23 plays here

    ↗Tim Sweeney: Fortnite, Unreal Engine, and the Future of Gaming | Lex Fridman Podcast #467youtube.com

    30 Apr 2025 · video · 4h 25m · spoken · official transcript

Electric cars will not reach 30% of US sales by 2027; the forecasts that looked pessimistic in 2018 were still too optimistic.

  1. Rodney Brooks Robotics researcher, emeritus professor at MIT and former… Q3 2024 had the rate 8.9% so there is no way it can reach 30% in 2027. I was way too optimistic at a time when EV enthusiasts thought I was horribly pessimistic. Predictions Scorecard, 2025 January 01rodneybrooks.com · 1 Jan 2025
    Their wordsQ3 2024 had the rate 8.9% so there is no way it can reach 30% in 2027. I was way too optimistic at a time when EV enthusiasts thought I was horribly pessimistic.

    ↗Predictions Scorecard, 2025 January 01rodneybrooks.com

    1 Jan 2025

His own predictions of when something will ship are pathologically optimistic, and the criticism that he is late is correct.

Filed here becauseSaid of his own forecasts.

  1. Elon Musk Founded SpaceX in 2002 Yeah. I mean, I would say that I’m pathologically optimistic on schedule. This is true. Elon Musk: War, AI, Aliens, Politics, Physics, Video Games, and Humanity | Lex Fridman Podcast #400youtube.com · 9 Nov 2023 · 1:54:38 into the video
    Their wordsYeah. I mean, I would say that I’m pathologically optimistic on schedule. This is true.

    Where this was said

    Watch from 1:54:38 plays here

    ↗Elon Musk: War, AI, Aliens, Politics, Physics, Video Games, and Humanity | Lex Fridman Podcast #400youtube.com

    9 Nov 2023 · video · 2h 16m · spoken · official transcript

The deeper anyone digs into a charity's cost-effectiveness estimate, the more unwarranted optimism they find, so the right prior on giving is a sceptical one.

  1. Holden Karnofsky Co-founder of GiveWell Giving well seems conceptually quite difficult to me, and it’s been my experience over time that the more we dig on a cost-effectiveness estimate, the more unwarranted optimism we uncover. Why we can’t take expected value estimates literally (even when they’re unbiased)blog.givewell.org · 18 Aug 2011
    Their wordsGiving well seems conceptually quite difficult to me, and it’s been my experience over time that the more we dig on a cost-effectiveness estimate, the more unwarranted optimism we uncover.

    ↗Why we can’t take expected value estimates literally (even when they’re unbiased)blog.givewell.org

    18 Aug 2011

A viewour reading

Optimism can be a privilege, or a cover for someone else's plan

3 claims filed here, newest first — each in the words of whoever said it.

Believing that Trump might yet help Ukraine is not harmless optimism: it is part of a manoeuvre that buys Putin time.

  1. Phillips P. OBrien Professor of Strategic Studies at the University of St… In other words, it is not harmless optimism to act like Trump might help Ukraine, it is falling for a deadly, pro-Putin maneuver that is and will increasingly lead to Ukrainian suffering. Weekend Update #199: Ukraine's Campaign Against Russian Oil Infrastructure Should Be The Focusphillipspobrien.substack.com · 23 Aug 2026
    Their wordsIn other words, it is not harmless optimism to act like Trump might help Ukraine, it is falling for a deadly, pro-Putin maneuver that is and will increasingly lead to Ukrainian suffering.

    ↗Weekend Update #199: Ukraine's Campaign Against Russian Oil Infrastructure Should Be The Focusphillipspobrien.substack.com

    23 Aug 2026

Show all 3 claims

Younger generations are rejecting AI hype while older generations, who stand to benefit from it, remain optimistic

  1. Tom MacWright Software engineer and writer there's a consistent theme where Gen Z (and millennials, to some extent) are rejecting the AI hype while older generations are optimistic and coincidentally in a position to benefit from it. Recentlymacwright.com · 4 Jun 2026
    Their wordsthere's a consistent theme where Gen Z (and millennials, to some extent) are rejecting the AI hype while older generations are optimistic and coincidentally in a position to benefit from it.

    ↗Recentlymacwright.com

    4 Jun 2026

Being optimistic about AI as it currently exists requires a degree of privilege.

  1. Josh Collinsworth Front-end developer and writer on Svelte, Vue It seems to me that to be in this group-to regard AI, as it exists currently, with optimism and enthusiasm-requires at least a certain degree of privilege. AI optimism is a class privilegejoshcollinsworth.com · 3 Dec 2025
    Their wordsIt seems to me that to be in this group-to regard AI, as it exists currently, with optimism and enthusiasm-requires at least a certain degree of privilege.

    ↗AI optimism is a class privilegejoshcollinsworth.com

    3 Dec 2025

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