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Lex Fridman
x.com
SpaceX will help expand humanity out to the stars. It makes me excited for the future! Huge congrats to Elon and the SpaceX team 👊
congrats stars spacex
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19 September
Dutch bootstrapper who builds and runs their internet startups alone — Nomads.com, Remote OK, Hoodmaps, Photo AI and Interior AI — and has written about it at levels.io since 2013. Posts as @levelsio.
🌎 Now redesigning the https://t.co/HGCLKS5BD6 profile trips globe from scratch I've always wanted to add space trips, so starting with the moon here which you can add as a future trip, also adding Mars etc. Other trips also need to work here though like going into orbit like @satofishi did on @SpaceX's Dragon capsule which will be more in reach for more people hopefully pretty soon! Quoting @levelsio ✨ Finally built a timeline for https://t.co/HGCLKS5BD6 now I always wanted to make my site a bit more social, because I had profiles and trip overlaps and you could kinda see where other people went, but not something like this So on this new page you can see people near you, where everyone's trave… Related
17 September
Bulgarian-born writer and founder of The Marginalian (formerly Brain Pickings), a reader-funded blog on books, science, art and philosophy running since 2006.
Structural engineer and senior infrastructure fellow at the Institute for Progress; writes Construction Physics on why physical things cost what they cost.
Writes The Pragmatic Engineer, the software-engineering newsletter, and wrote The Software Engineer's Guidebook. Formerly an engineering manager at Uber, and at Microsoft/Skype and Skyscanner before that.
Software engineer who writes about low-level and systems programming at nullprogram.com; author of the Elfeed feed reader, the Endlessh SSH tarpit and Enchive.
15 September
Economics professor at the University of California, Berkeley and a former Deputy Assistant Secretary of the US Treasury. Author of Slouching Towards Utopia and writer of the Grasping Reality newsletter.
Mathematical physicist at UC Riverside. Wrote This Week's Finds in Mathematical Physics and now the Azimuth blog on mathematics, physics and environmental science.
Imagine thinking you had a good 20 years ahead of you. You go to the doctor for an annual physical, she does some tests, then comes back with a long face and says "I'm sorry to say: you have just 2 months to live". That's what just happened here. While planets in the inner Solar System are believed to have orbits that are unstable in the long term, astrophysicists thought the outer planets could last ~100 billion years before being picked off by other stars flying past, and other effects. But recently, we've learned something that changes this story. As red giants lose their mass by puffing o… solar Related
Founder and CEO of Social Capital, a venture firm; co-host of the All-In podcast and an early Facebook executive. Writes an annual letter and a weekly newsletter on markets and technology.
10 September
Co-founder and chief investment officer of Cambria Investment Management. He has written several books on quantitative asset allocation, blogs at Meb Faber Research and hosts The Meb Faber Show.
Wahoowa and wow....@UNC better put a @SpaceX logo on their unis this year (thx to @elonmusk...) Quoting @compound248 Early reporting US college endowment annual returns (FYE June 30th) are rolling in and ACC basketball dominates the leaderboard. The dispersion this year will be massive, with SoaceX, “AI,” and biotech as the big delineators. HT: @Campbell__W Related
8 September
Writer of the 25iq blog, where he distils "a dozen things I've learned" from investors, founders and thinkers. Author of Charlie Munger: The Complete Investor and A Dozen Lessons for Entrepreneurs.
Stoke Space’s Nova Pathfinder will have 5× the reusable payload capacity of Pathfinder: 3,000 kg increases to 15,000 kg Other planned increases: Rocket Lab Neutron: 13,000+ kg Firefly Eclipse: 16,000+ kg SpaceX Starship: 100,000+ kg design target Related
5 September
Structural engineer and senior infrastructure fellow at the Institute for Progress; writes Construction Physics on why physical things cost what they cost.
3 September
Technology writer of Spyglass, a newsletter about technology and media. Previously a reporter at TechCrunch and an investor at GV.
1 September
Chilean web engineer building web experiences since 2006; co-founder of Media Creators and writes at iolivares.com.
This is huge! 👏 Congrats both teams, the world needs more things like these. This is what I love from the web development, collaboration drive evolution since day 1. Quoting @tan_stack 🏝️ + ▲ = 🚀 TanStack and @Vercel are officially teaming up! We’re working together to make Vercel a first-class home for TanStack Start with better support for deploying and running anything you can dream up with TanStack on Vercel. Start here! 👇 Related
Brazilian software engineer, creator and maintainer of GoReleaser; works on Copilot CLI at GitHub. Writes about tooling and his setup at carlosbecker.com.
30 August
Founded SpaceX in 2002, joined Tesla's board in 2004 and became its chief executive in 2008; later founded Neuralink, The Boring Company and xAI. Bought Twitter in 2022 and renamed it X, where he now posts many times a day.
Their words
Extending consciousness beyond Earth, ultimately to the stars, is a fundamentally good goal
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@elonmusk on X x.com
27 August
Chief AI Scientist at Databricks, after its acquisition of MosaicML, where he was a founding team member; known for the Lottery Ticket Hypothesis from his MIT PhD (ICLR 2019 Best Paper).
Congrats to @srush_nlp for increasing the amount he's going to owe me when he loses this bet in 126 days 🤗🤗🤗 Related
Game designer and programmer, co-founder of id Software and co-creator of Doom, Quake and Wolfenstein 3D. Now runs Romero Games in Galway, Ireland.
Congrats to @bitreactor @GregFoertsch and the whole team on the upcoming launch of Star Wars Zero Company. Amazing reviews! Great to see it. pcgamer.com
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20 August
Co-founded Neuralink and founded Science Corp, which is building a retinal implant; writes about neural interfaces and biology.
Their words
the other extreme is if we're serious about exploring the universe and going to the stars, we are going to have to adapt ourselves to that environment. We're not going to export Earth with us everywhere we go.
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youtube.com
19 August
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
17 August
Senior space editor at Ars Technica; wrote Liftoff and Reentry on SpaceX, and reports on launch and rocket programmes.
From one piece
There’s a huge launch crunch right now, and it will probably get worse
2 beliefs, in the piece's order there
Their words
In financial documents, it’s clear that SpaceX views commercial launch as a rounding error compared to revenues from its own satellites in space.
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arstechnica.com
Their words
The company that is almost exclusively responsible for the dramatic increase in launch availability in the 2020s has signaled that it intends to wind down Falcon 9 operations as quickly as possible in favor of the larger Starship rocket.
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arstechnica.com
11 August
Writer of the personal-finance blog Of Dollars And Data and author of Just Keep Buying and The Wealth Ladder. Chief Operating Officer at Ritholtz Wealth Management.
10 August
Software engineer at PlanetScale and creator of the vim-go plugin. Writes at arslan.io about Go, tooling, industrial design and books.
8 August
Founder and CEO of Social Capital, a venture firm; co-host of the All-In podcast and an early Facebook executive. Writes an annual letter and a weekly newsletter on markets and technology.
7 August
AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).
Just saw that the LLMs-from-scratch repository passed 100,000 stars on GitHub! This is super cool and motivating. I am really happy to see that this open-source repo has helped so many people. Thanks also to everyone who shared ideas and opened PRs with improvements! Of course, I plan to keep adding new material, including new attention variants and architectures (while bigger projects like RL and Reasoning From Scratch live in their separate repositories). I am also currently working on a larger applied custom “small” LLM project. It has been keeping me super busy this month, but I will shar… LLMs Related
4 August
Writer of the personal-finance blog Of Dollars And Data and author of Just Keep Buying and The Wealth Ladder. Chief Operating Officer at Ritholtz Wealth Management.
Congrats to @Jack_Raines on publishing his first book! An entertaining read for anyone in their 20s/early 30s who doesn’t want to follow the traditional path Related
19 July
Writes The Convivial Society, on technology and the moral life — what our tools do to attention, memory and how we treat each other.
15 July
Game designer and programmer, co-founder of id Software and co-creator of Doom, Quake and Wolfenstein 3D. Now runs Romero Games in Galway, Ireland.
What an incredible honor, and DOOM is the only video game on the list! Congrats to DOOM devs, players, modders, and the entire games community. This one is for all of us. Thanks @GenePark @washingtonpost! Related
12 July
General partner at Andreessen Horowitz from 2013 to 2018 and CTO of Coinbase from 2018 to 2019; co-founder of Counsyl and Earn.com. Wrote The Network State (2022), free in full at thenetworkstate.com, and founded the Network School.
19 June
Professor of finance at NYU's Stern School of Business, known for his work on valuation. He publishes his data, spreadsheets and classes free at Damodaran Online and writes the Musings on Markets blog.
As the debate about the pricing of SPaceX, OpenAI and Anthropic heats up, there is a parallel debate about whether S&P should be including these companies in the S&P 500 index, with many arguing against inclusion. My thoughts on the topic: bit.ly
Anthropic OpenAI Related
12 June
Founding member of OpenAI and former director of AI at Tesla; creator of nanoGPT and the term "vibe coding".
In awe of SpaceX and its story - past, present and the future. You can think about it in 10+ different ways and continue re-blowing your mind in circles. Huge congrats to the team! 🚀 Related
4 June
Professor of finance at NYU's Stern School of Business, known for his work on valuation. He publishes his data, spreadsheets and classes free at Damodaran Online and writes the Musings on Markets blog.
I valued SpaceX for its IPO a few weeks ago, with minimal information and a promise to revisit the valuation, when the prospectus was made public. The prospectus is public, the offering price has been set and my update is up and running. bit.ly
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29 May
Game designer and programmer, co-founder of id Software and co-creator of Doom, Quake and Wolfenstein 3D. Now runs Romero Games in Galway, Ireland.
Congrats to Ardan on taking over the first floor of our old (but much loved) space in Galway City centre! @romerogamesltd moved to its new, larger office in Dockgate on Merchants Road in 2023 (reception pictured below). The old office had been used to store my archives. Quoting @galwayad As part of its continued growth as an organisation, the team at Ardán is relocating its headquarters from the CREW Hub on Wellpark Road into Galway city centre Related
16 May
Writes Stratechery, a subscription newsletter on the business and strategy of technology, and hosts the Dithering and Sharp Tech podcasts.
Is this from the SpaceX prospectus Quoting @IamSean90 Best comment ever on data centers Related
6 May
Member of technical staff at Anthropic. He has led ML/AI teams at Amazon, Alibaba and Lazada, and writes about LLMs, recommender systems and engineering at eugeneyan.com.
you get more compute. you get more compute. you get more compute! Anthropic 🤝 SpaceX Quoting @claudeai Effective today, we are: 1) Doubling Claude Code’s 5-hour rate limits for Pro, Max, and Team plans; 2) Removing the peak hours limit reduction on Claude Code for Pro and Max plans; and 3) Substantially raising our API rate limits for Opus models. Anthropic Related
28 April
Former L8 engineer at Meta, Microsoft and Atlassian, now writing and building solo on agentic engineering. Writes Kun's Field Notes and posts a lot about AI coding agents on X.
24 April
Professor of finance at NYU's Stern School of Business, known for his work on valuation. He publishes his data, spreadsheets and classes free at Damodaran Online and writes the Musings on Markets blog.
The SpaceX IPO is coming, and it will be a doozy, a futuristic company (spaceships, satellites and AI), a founder who will keep things interesting (Musk) and a price tag that may make it the most highly priced IPO of all time. bit.ly
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1 April
Hosts the Lex Fridman Podcast — long, unhurried conversations with scientists, engineers and public figures. Several of the interviews quoted elsewhere on this site are episodes of it.
Humans just launched into space, on their way to the moon (flyby around it). It'll be farthest humans have ever traveled into deep space 🤯 Congrats to all the incredible engineers & teams involved! LFG!!!!!!! Related
10 February
Founder of Terraform Industries and formerly a physicist at NASA's Jet Propulsion Laboratory; writes about energy, space and manufacturing.
18 January
JavaScript programmer; creator of the jQuery library, author of Secrets of the JavaScript Ninja, and long-time engineer at Khan Academy.
jQuery v4 is out! Huge congrats to the team on getting this release out, no small feat! Quoting @jquery It's here! jQuery 4.0.0 FINAL is released! 3 days after jQuery's 20th birthday. https://t.co/Tw4CdtYRg2 #jquery #happybirthday #jqueryreunion Related
1 January
Long-time Debian developer and free-software maintainer (remctl, INN, pam-krb5) who has published book reviews on his personal site since the 1990s.
Their words
The best book I read this year was also the last book I reviewed (and yes, I snuck the review under the wire for that reason): Bethany Jacobs's This Brutal Moon, the conclusion of the Kindom Trilogy that started with These Burning Stars. I thought the first two books of the series were interesting but flawed, but the conclusion blew me away and improved the entire trilogy in retrospect. Like all books I rate 10 out of 10, I'm sure a large part of my reaction is idiosyncratic, but two friends of mine also loved the conclusion so it's not just me.
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eyrie.org
26 December 2025
Software engineer at PlanetScale and creator of the vim-go plugin. Writes at arslan.io about Go, tooling, industrial design and books.
Their words
The story is very intriguing. Humanity finds a dead body on the moon. The caveat? The body is 50,000 years old. The story starts slow, but then the pace becomes phenomenal. Highly recommended.
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arslan.io
9 November 2025
Founder of WP Engine and Smart Bear; writes A Smart Bear, long essays on strategy, pricing and how startups actually fail.
29 October 2025
Game designer; wrote A Theory of Fun for Game Design and worked on Ultima Online and Star Wars Galaxies.
Stars Reach visual upgrades For months now, we have been working on a big overhaul to the visuals in Stars Reach. This has involved redoing most of the shaders in the entire game, and going back and retouching every asset. We started by redoing al…
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7 October 2025
Pen name of the Canadian-American writer behind mrmoneymustache.com, a blog on frugality, early retirement and index-fund investing that has run since 2011.
5 May 2025
Astrophysicist at Barnard College; wrote Black Hole Blues and How the Universe Got Its Spots, and directs sciences at Pioneer Works.
From one piece
Janna Levin: Black Holes, Wormholes, Aliens, Paradoxes & Extra Dimensions | Lex Fridman Podcast #468
4 beliefs, in the piece's order there
Their words
We don’t think that the universe has had enough time to make them from stars that just merge. We know that two black holes can merge and make a bigger black hole and then those can merge and make a bigger black hole. We don’t think there’s been enough time for that.
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youtube.com
Their words
But then I think that there’s a confusion that dead stars, these very, very massive stars that die, are synonymous with the phenomenon of black hole. And it’s really not the case. Black holes are more general and more fundamental than just the death state of a star.
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youtube.com
solar
Their words
It becomes impossible to imagine that life was not sparked somewhere else, in our Milky Way galaxy, and maybe even in our local neighborhood of the Milky Way galaxy, maybe within a few hundred light years of our solar system.
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youtube.com
+ 1 more
Their words
And that’s what I mean by science is agnostic. Right? It’s the same technology overcoming a critical mass, igniting thermonuclear fusion.
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youtube.com
22 December 2024
Astrophysicist at the University of Rochester; works on the search for life elsewhere and wrote The Little Book of Aliens and Light of the Stars.
Their words
In which case, those kinds of collisions are so rare that you would expect one in a trillion stars to have planets. Instead, every star in the night sky has planets.
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youtube.com
30 November 2024
Founder of Terraform Industries and formerly a physicist at NASA's Jet Propulsion Laboratory; writes about energy, space and manufacturing.
14 October 2024
Economist writing on why technological progress slowed and what would restart it — energy, supersonic flight, housing and the regulations around them.
8 October 2024
Research scientist at Anthropic; co-creator of the Variational Autoencoder and, with Jimmy Ba, of the Adam optimizer, two of the most widely used tools in deep learning.
Congrats to @geoffreyhinton for getting the Nobel! His impact is immeasurable, very much deserved. Quoting @NobelPrize BREAKING NEWS The Royal Swedish Academy of Sciences has decided to award the 2024 #NobelPrize in Physics to John J. Hopfield and Geoffrey E. Hinton “for foundational discoveries and inventions that enable machine learning with artificial neural networks.” Related
2 October 2024
Founder of Terraform Industries and formerly a physicist at NASA's Jet Propulsion Laboratory; writes about energy, space and manufacturing.
31 August 2024
Statistician at Carnegie Mellon; writes on complex systems, machine learning and inference, and has kept a books-read notebook since 2000 that is now thousands of entries long.
Their words
Mind candy: a very angsty romance wrapped in a shell of space opera. Both aspects of the story are left in media res, and I look forward to reading the sequels.
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bactra.org
1 June 2024
Moroccan senior frontend developer writing at smakosh.com; builds side projects and client work under Smakosh LLC.
Their words
Side note for CSS, I'm cool to use what ever tech available out there that makes my task done quickly & well, I have personally used Bootstrap 3 & 4, Bulma, Lostgrid, Materliaze, Skeleton, Tailwindcss, Styled-components, emotion, CSS modules, Tachyons & made my own micro CSS framework called Unnamed that has over 200 stars on GitHub. Still I prefer using Tailwindcss.
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smakosh.com
3 February 2022
American software engineer working across web, mobile and TV platforms; writes at sean.is.
Congrats to the team for bringing yet another free tool to help artists succeed. We tried @reactnative for this one. Quoting @audiomack CREATORS, download our NEW Creator App now to: • Upload music • View stats • Connect with fans All from your phone. 🔶🔗 Related
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