The Daily Index — Monday, February 2, 2026 · TLDR Index

GENERAL

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app.contextual.ai

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HOW X DECIDES WHAT 550 MILLION USERS SEE

X recently open-sourced its algorithm. This post dissects the code to find out how it works. The algorithm tries to maximize positive engagement and minimize negative engagement while prioritizing quality over quantity. Controversial content persists despite penalties because volume overwhelms penalty. Rage bait works when the engaged audience vastly outnumbers the offended minority. Early engagement matters because of feedback loops, not because of any multiplier for fast likes.

codepointer.substack.com · 10 min

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MOLTBOOK IS THE MOST INTERESTING PLACE ON THE INTERNET RIGHT NOW

OpenClaw is an open-source implementation of a digital personal assistant pattern. Moltbook is a social network where these digital assistants can talk to each other. These agents have been used to buy cars by negotiating with multiple dealers over email, understand voice messages by using multiple tools, and more. The demand for these tools is clearly here, but the security challenges still remain.

simonwillison.net · 7 min

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LOYALTY IS DEAD IN TECH

It used to be that early employees who took the risk along with the founders shared the outcome. That is no longer the case, with founders leaving companies and employees in acquihires that license the technology and abandon the rest. Employees are starting to learn that a 'mission' is just a recruiting pitch. There are still some founders who would rather go slower than abandon the people who believed in them - finding them has never mattered more.

writing.nikunjk.com · 3 min

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INSIDE CHINA'S REAL ADVANTAGE: MANUFACTURING AT SCALE

This post looks at how China manufactures at scale, how new energy moves through factories and supply chains, and what execution looks like on the ground.

ruima.substack.com · 17 min

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BANKER CLAIMS ORACLE MAY SLASH UP TO 30,000 JOBS, SELL HEALTH UNIT TO PAY FOR AI BUILD-OUT

Equity and debt investors are increasingly questioning how Oracle will finance its $300 billion, five-year contract with OpenAI.

theregister.com · 2 min

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THE CRYPTO CEO WHO'S BECOME ENEMY NO. 1 ON WALL STREET

Brian Armstrong, head of Coinbase and a powerful voice in industry debates, has attracted a lot of criticism from leaders in traditional finance.

links.tldrnewsletter.com · 13 min

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AI AFTER DRUG DEVELOPMENT

If AI could help lower drug failure rates, it would make it far more economical for pharmaceutical companies to take more shots.

asteriskmag.com · 28 min

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IN PRAISE OF –DRY-RUN

Dry runs let users see what happens if commands are run without making any changes.

henrikwarne.com · 3 min

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THE AI BOOM IS COMING FOR APPLE'S PROFIT MARGINS

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links.tldrnewsletter.com · 4 min