Founding team @Mashgin. Public market turned deep tech seed investor. Publish Buffett letters book: https://xitter.cf/t.co/J1ESA46POB, SpaceX book

San Francisco Bay Area
Joined March 2009
SpaceX has been succeeding in public for 15+ years. Now they're the most valuable private company on Earth & the competition isn't close. Is any of this repeatable? Why hasn't the model been copied? Wrote an essay on why + what anyone building hard things can learn:
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The flywheel never dies
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Had claude make me the time cycle clock I've always wanted: day, week, lunar month, year. Now I want a physical version...
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And now you can preorder the NOMAD LETTERS (out December 1!): press.stripe.com/nomad-lette… For years these letters have circulated (at first, unofficially) among investors, acquiring a devoted readership. We wanted to give them a permanent home in print. Nick and his partner Qais Zakaria’s record is extraordinary. The letters are the account of how they got there, featuring everything from studying Amazon and Costco (Nomad’s defining investments)—to visiting cement plants in Zimbabwe, and beyond. They’re candid about their mistakes and curious about the forces that shape investors’ behavior: incentives, psychology, and the wisdom (or foolishness!) of the crowd. Since closing the fund, they’ve devoted their time to philanthropy, a journey Nick recounts in the lovely foreword he wrote for this edition. I’m thrilled to continue adding to the investing corner of our catalogue, and I can’t think of a better work to follow Poor Charlie’s Almanack. ❣️
Finally someone caught it 🤭🤭
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The French Revolution, 250 years ago or today?
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I gave genuine tries to threads and bluesky. Bluesky was awful. Threads ok at first but I had to delete it also got pretty bad. X is best. Although still needs a lot of curation effort to make it truly useful. A lot more could be done
Last year I thought Threads was an existential risk to X. When Meta puts its full weight behind something -- by injecting the app into Instagram, it’s DEFCON 5: You have to squeeze out every last drop of growth from all available surfaces to save the app. However, I started to realize that the opposite was happening: It was strengthening X. If you look at any announcement by Zuck, you will see the most rude & toxic comments on the internet. But when he makes those same announcements on X, people are thrilled about how he’s pushing humanity forward. X is a place where people are excited about the future, so it’s no surprise he and his top lieutenants are using it more than their own app. Threads — and Bluesky — have effectively quarantined some of the worst people on the internet. And so I had an epiphany: those apps are X’s anti-abuse systems.
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I’ve had a lot of people asking me about the botched execution of Christa Pike in Tennessee, as well as the upcoming execution by firing squad that’s supposed to be livestreamed. Having spent nearly 20 years on death row, my thoughts and feelings about these things are so vast that I sometimes struggle to find a place to begin. I became close friends with a man who had committed murder. He was like a brother to me. I once watched him break down crying, trembling as he told me he wished he was as evil as the world believed him to be, because then he wouldn’t have to care about what he’d done. Fifteen years later, he was still having nightmares about it. I know in my soul that he would never hurt another person again. But I’ve also watched a man being stabbed to death in prison. I cried for days afterward, and something inside me was changed forever. I learned that some people are capable of extraordinary transformation, while others remain capable of terrible violence even behind prison walls. There are no simple answers here. No slogans or political arguments that can adequately address the complexity of human beings, guilt, punishment, and suffering. But there is one thing I want to say about the upcoming execution by firing squad. Don’t watch it. Whatever you believe about the death penalty, even if you think the person being executed deserves to die, don’t watch it. You cannot witness a human being being killed and simply walk away unchanged. What you see becomes part of you. It follows you into places you never expected it to reach. There are things I witnessed in prison that I would give anything to forget, things that still cast a shadow over my life decades later. There’s a difference between understanding that terrible things happen in the world and deliberately making yourself a spectator to them. I don’t have all the answers about justice, punishment, or forgiveness. But I do know that killing another human being should never become so ordinary that we turn it into something to watch from the comfort of our living rooms.
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Yeah I’m sure that’ll deter radicals in the future…
execution of Fort Hood shooter will be livestreamed
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"area man watches videos every night of his recently deceased best friend" 😔 RIP Charlie
This is crazy. Warren is just like us. WSJ: "In August, Osberg visited Buffett’s home in Omaha. They spent hours on YouTube." "At the office, he’s known for poring over annual reports, searching for nuggets that can lead to a profitable investment. Mornings are dedicated to CNBC. Evenings, though, are all about YouTube. The content is hardly ever related to investing or finance" wsj.com/lifestyle/warren-buf…
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I finally have all my Berkshire archive material and data in 1 place: berkshireletters.com Check it out! annotated, interactive charts are a favorite medium of mine so this was really exciting to build.
60 years of Berkshire Hathaway on one chart. Zoom into any year and you land in that year's Buffett letter and meeting transcript. Every letter since 1965 and every meeting since 1994, in one place.
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New post: Everyone warns founders about doing too many things. Almost nobody warns them about doing one thing for too long. futureblind.com/p/scouts-and…
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Is there a good reason @Substack still doesn't allow simple tables in posts? some arcane religious rule I'm not aware of? An inside joke? Prediction market widget: yes Table: ?
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The bioethics circle jerks during the Human Genome Project, which were allocated 5% of the project's funding, were a total waste of time. They had countless conferences and workshops imagining bad things that could happen like punitive health insurance rates based on genetic risk, none of which actually came to pass. Meanwhile all the real issues that arose from ubiquitous DNA data, like accidentally doxing your criminal relatives with your own 23andMe data, were never imagined. It's a condemnation of the precautionary principle. Philosophers can make up all sorts of hypothetical scenarios in a vacuum but it's nothing like actually trying things and seeing all the weird second and third-order consequences that emerge and *then* dealing with the unwelcome ones.
I've been suspicious of the philosophers hired by Anthropic who specialize in AI ethics for similar reasons that I'm skeptical of those who went into "bioethics": they form a closed subculture that delights in clever arguments without regard to the human suffering that can result. | ‘Suicidal Compassion’: Meet the Anthropic Officials Who Think AI Might Be Justified in Going Rogue Against the Humans Enslaving It freebeacon.com/america/suici…
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No Mr. Robot? This entire list is suspect And 30 rock was good but #8 really?
The NY Times has released a list of the Top 100 Best TV shows of the 21st Century. They polled over 500 major stars, showrunners & other notable names. (Source: nytimes.com/interactive/2026…)
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Is there a coding harness bench? Claude code vs Cursor vs [x] with the same model. This is becoming increasingly important. and on related note, what's the best free "choose your model" harness? I'd love to quickly try Grok, Gemini, Kimi etc.
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This week on Construction Physics: How SpaceX Streamlined the Raptor Engine construction-physics.com/p/h…
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Max Olson retweeted
Congrats everyone on successfully politicizing the most important issue of our times. I'm sure saner heads will prevail and we will collectively choose the right course of action for sure now.
The frontier of artificial intelligence is advancing at an alarming speed. Over the weekend, industry leaders voiced support for an idea that the American people and many AI researchers in their own labs have been calling for: We must responsibly slow the pace of frontier AI development. A slowdown is critical in order to ensure AI serves the public interest. Pacing AI development does not mean giving up on this technology’s potential to produce life-saving benefits in fields like medicine — some of which we are already seeing. Rather, it is about setting up sensible guardrails so that AI does not completely escape human control and endanger our safety and collective future. This moment demands the leadership of the United States government. Congress must work at an urgent pace to pass new laws and establish a new federal entity to provide oversight and independent testing for this technology, to ensure accountability, and to protect our wellbeing. We need cooperation at an international level as well. The United States must continue to lead the world in developing AI technology even as we seek to impose common-sense safety standards. This means that the president must do his job to protect America’s interests by pursuing a treaty with countries like China to stop dangerous uses of AI, limit the speed of its development, and adopt global standards for testing.
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AI writing is pretty bad. But AI coding is bad as well if you actually look at the code & steps used to write it - much worse than good human coder. Only difference is verifiability + the loop to get it right. Once you have good verification, game over for many areas.
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I say this after I ask Claude code to make a simple change (2 liner), and after 12 tools calls and corrections and 3 minutes and passing the full test suite, it finishes something a human would have done in 30 seconds.
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Max Olson retweeted
25 years ago today Welles Crowther gave his life helping others on 9/11. This is the best story @espn has ever done. Share it with your kids and any others who may not have been alive on 9/11 and don’t know what true bravery in the face of evil is.
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