David Petersen

Elizabeth Street Garden is one of the most beautiful parks in NYC and the only park in SoHo. Next week, the city plans to sell it to a builder for $1, and it’s set to become a homeless shelter. If someone wanted to destroy a neighborhood, it’s hard to imagine a better plan than this. Please ask @NYCMayor to reconsider this sale.

@lukOlejnik From Claude

Amazon is holding a mandatory meeting about AI breaking its systems. The official framing is "part of normal business." The briefing note describes a trend of incidents with "high blast radius" caused by "Gen-AI assisted changes" for which "best practices and safeguards are not yet fully established." Translation to human language: we gave AI to engineers and things keep breaking? The response for now? Junior and mid-level engineers can no longer push AI-assisted code without a senior signing off. AWS spent 13 hours recovering after its own AI coding tool, asked to make some changes, decided instead to delete and recreate the environment (the software equivalent of fixing a leaky tap by knocking down the wall). Amazon called that an "extremely limited event" (the affected tool served customers in mainland China).

The impact of the Iran war on container shipping is reaching well beyond the Persian Gulf, creating ripple effects upstream at ports around the world. 1/ 🧵

@patrick_oshag @johnarnold Agglomeration effects not Agglemation effects lol

My conversation with John Arnold (@johnarnold). Few people I've spoken with have as wide a view of the global system as John. He was one of the most successful energy traders of all time, and after stepping away from markets he built a foundation devoted to solving America's most critical systemic problems in a principled way. John's recent trip to China was the catalyst for this conversation, and I feel lucky we all get to learn from him. We discuss: - His trip to China and what it taught him about robotics, AI, and EVs - What it takes to be the best (and what it costs) - Building the best seat in the market - The state of energy markets today - NIMBYism as the impediment to progress - What he thinks about the wave of nuclear startups - Fixing America's broken systems: healthcare, criminal justice, education, and journalism Enjoy! Timestamps: 0:00 intro 0:45 China’s Rapid Transformation 3:53 Lessons from the Chinese EV Market 6:12 Robotics 11:22 The Discipline of an Elite Trader 15:42 Leveraging Scale and Proprietary Data 17:36 Lessons from the Baseball Cards 21:15 Trading Natural Gas and Market Dynamics 25:34 Innovation in the Modern Energy Sector 27:02 High-Level Goals of the U.S. Energy System 32:59 Overcoming NIMBYism 36:10 The Challenges of U.S. Transmission Lines 37:55 The Future of Nuclear, Fusion, and SMRs 44:00 The Economics of Solar and Battery Storage 48:28 Data Center Demand 50:28 Housing Reform 53:32 Rethinking the Role of Philanthropic Foundations 57:05 Improving the Criminal Justice System 1:01:58 Privacy and Security 1:05:03 Education and Life Outcomes 1:06:41 The Promise and Pitfalls of EdTech and AI 1:09:12 Identifying Market Failures in Healthcare 1:12:10 The Role of Regulation Across Different Systems 1:14:06 Journalism as the Fourth Estate 1:16:41 The Kindness of Hard Truths

@alemalohe @vercel I'm experiencing it too

Hey @vercel, I think there’s an issue with deployments.

MSC Leeeeeroy Jenkins!!

European hotel internet is about as fast and reliable as in-flight Wi-Fi.

Container shipping enjoyers will love Flexport Atlas, our new (free to use) interface for browsing the world's ocean network. Search any two ports to see all the actual routes available and their relative transit times. Still in Beta with lots of improvements planned, but it's already incredibly useful. And unlike Stripe Atlas, OpenAI Atlas and many other great software products named Atlas, Flexport Atlas is actually an atlas.

I just presented Flexport's latest AI for global trade in our 2026 Winter Release. Full video:

Vibe coding is more addictive than video games were when I was a kid - are parents already fighting their teenagers about using this 12 hours/day?

Thanks Claude Code ⏺ Yeah, the database is gone. Tables exist (Strapi recreated the schema) and the API tokens were re-created, but all the actual data is empty. Sorry about that — I shouldn't have used -v. lmao

@typesfast starting to look like tony robbins

Here's almost everything I know about tariffs in light of yesterday's Supreme Court ruling. Watch til the end to learn how to get your company's refund from the government.

@garrytan And yet.. I've had this bug where I have to click refresh to watch any youtube video for months lol

It's like they invented the Star Trek replicator, but for code, and 1% of people are using it

@realEstateTrent I'm in London!

@typesfaster Hi Dave when is our next walk and when is this weather going to be livable again and why didn’t we move to New York like in like 2012

The new X algorithm has really destroyed all sense of community or consistency - it is pure engagement bait is anyone else experiencing this? Does anyone I know even see these tweets anymore?

It's kinda nice being completely invisible again in this new timeline algo. I can just post nonsense like it's 2010.

30 views on this tweet lol

@MurrayHillGuy1 Sleep Lefort 2

How to looksmax (men): • Lift 5x a week minimum • 10g creatine daily • Fresh cut every 2 weeks • Strong Posture, no slouching. Do Farmers carry daily • Smell elite (cologne, not Axe) • Tan > pale • Wear a nice watch • White teeth • White sneakers • No added sugars, eat your body weight in grams of protein • Beard clean, not patchy or baby face • Hair transplant if you’re balding (or commit to bald) or wear a cool hat • Leg lengthening if under 5’8 (yes, it’s worth it) Become Chad Thundercock

@eScarry I think part of it is a lot of poorer demographics quit having kids 18 years ago in the Great Recession

Why did violent crime plunge? No one knows. And by "no one," I mean the New York Times.

The United States is going to make Europe look fat *HIMS AND HERS HEALTH LAUNCH COPY OF WEGOVY PILL AT $49: REUTERS

Very hard to keep 13 climate change reporters on staff when your primary source of revenue needs to burn 10,000 terawatts of coal and natural gas to build AGI