The Daily Index — Monday, September 1, 2025 · TLDR Index

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qawolf.com

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go.clerk.com

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WHY DO BROWSERS THROTTLE JAVASCRIPT TIMERS?

JavaScript's setTimeout(0) can actually run 4 milliseconds later. A lot of websites spam setTimeout, so browsers set the delay to avoid draining users' batteries or other issues. Developers could just use other alternatives. While these options can still be abused, they are permitted for now.

nolanlawson.com · 6 min

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CUTTING-EDGE AI WAS SUPPOSED TO GET CHEAPER. IT'S MORE EXPENSIVE THAN EVER

The latest AI models are doing more 'thinking', driving up the costs to complete tasks despite the cost of tokens dropping. This is the opposite of what many analysts and experts predicted even just a few months ago. Reasoning can deliver meaningfully better responses, but it spends significantly more tokens in the process. One way to lower costs is to use 'dumber' AIs - many use-cases don't require cutting-edge AI.

links.tldrnewsletter.com · 7 min

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THE AMUSEMENT PARK FOR ENGINEERS

Anduril started with lofty ambitions of reinventing the defense ecosystem. The company has now deployed more than 30 products with thousands of field-tested systems and changed the arc of American defense technology. This article looks back at the years of explosive growth to give other founders, engineers, investors, operators, and everyone else a glimpse of what growth at Anduril was actually like.

joincolossus.com · 44 min

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COGNITIVE LOAD IS WHAT MATTERS

Cognitive load is how much a developer needs to think in order to complete a task.

github.com · 32 min

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VIBE CODING TERMINAL EDITOR

Large language models don't magically solve all software engineering problems, and they don't solve maintenance.

matklad.github.io · 11 min

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I SAT DOWN WITH WERNER VOGELS

A summary of an interview with Werner Vogels, the CTO of Amazon, where he covers two decades of lessons from building some of the most critical infrastructure on the Internet.

everton.xyz · 4 min

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VIBE SHIFT? SENIOR DEVELOPERS SHIP NEARLY 2.5X MORE AI CODE THAN JUNIOR COUNTERPARTS

Senior developers may simply be better equipped to catch and correct AI's mistakes.

fastly.com · 7 min

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WHY HAVEN'T QUANTUM COMPUTERS FACTORED 21 YET?

The factoring-21 circuit is more than one hundred times more expensive than the factoring-15 circuit.

algassert.com · 9 min

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THE EVIDENCE THAT AI IS DESTROYING JOBS FOR YOUNG PEOPLE JUST GOT STRONGER

Understanding real-time changes to the economy is hard work, and overconfidence in any direction is inadvisable.

derekthompson.org · 16 min