Skip to content
Sat, Aug 22
Sign in
The Daily EPUB

Saturday, August 22, 2026 · No. 8

20 articles · ~3h 22m read · 8 sections

A personal morning paper, assembled daily; the selection is the reader's, the words are the authors'.

Sign in to read every article's full text and download the editions, or request access.

Top Stories

There's no reason for software to be slow anymore

Jach · Hacker News: Best · danluu.com · 20 min

Cheap LLM agents have dropped the cost of performance optimization so far that workload-specific custom software is now inevitable. The author shows an agent-tuned regex engine giving 2–4x speedups on his long ripgrep queries, and an Azul AI built mostly on a laptop that defeated the previous strongest in the world. Specific, first-hand evidence of a shift.

Hacker News: 394 points · 283 commentsComments

Mother tongue

Jenny Williams · Top News - MIT Technology Review · technologyreview.com · 21 min

In this excerpt, a widowed father tries to explain death and language to his four-year-old son, who invents a monster that consumes dead words—just as an untranslatable AI called Tingsu raises fears of a first strike. As Daniel pitches his AI child-rearing service to a skeptical couple, he confronts the uneasy partnership between human care and machine wisdom.

Why Human Giants Defy the Laws of Physics

Joel David Hamkins · Nautilus · nautil.us · 8 min

Galileo's square-cube law proves that human giants cannot exist: a 10-times-larger body would have bones 100 times stronger but weigh 1,000 times more, so it would be crushed under its own mass. The essay applies the same scaling argument to explain elephant proportions, insect wall-walking, and why Lilliputians are equally impossible, adapted from Joel David Hamkins's 'The Book of Infinity.'

Tech & Engineering

I accidentally logged hundreds of thousands of phone calls to military bases

gavide · Hacker News: Best · lina.sh · 8 min

For 5€, the author buys an expired domain and winds up controlling the e164.arpa phone-routing zones for Saint Helena, Diego Garcia, and Ascension Island. Months later, logs record hundreds of thousands of ENUM queries for the military bases, so he shuts it down and reports to the NCSC. The piece explains the dead ENUM system and ends with the NCSC taking over the domain.

Hacker News: 540 points · 64 commentsComments

SQLite plans can drastically differ with CTE and temp table

Recall · Popular Posts on Scour Today · askrecall.dev · 4 min

A CI release-gate benchmark balloons to 44 minutes when a fuzzy-search query's unindexed CTE forces 10 billion checks; moving the eligible list to a temp table with a primary key cuts that query from ~9 minutes to ~1 second and the whole gate from 44 minutes to 45 seconds. It also explains why local testing missed the bug: different SQLite versions pick different query plans.

Hacker News: 1 points · 0 commentsComments

Shaun Thomas: The Time Traveler's Primary Key

Planet PostgreSQL · postgr.es · 10 min

Postgres 18 ships uuidv7(), a fix for the B-tree fragmentation random UUID v4 keys cause: v7's timestamp prefix restores sequential inserts. Benchmarks on a million rows show v7 indexes about 25% smaller, ~90% leaf density versus ~71% and nearly half fragmented for v4. The piece also weighs tradeoffs — timestamp metadata leakage, right-edge contention — and compares snowflake IDs.

Running AI agents in GitHub Actions with Docker Sandboxes

Jennifer Kohl · Docker Blog · docker.com · 8 min

A practical walkthrough runs a GitHub-hosted agent inside a Docker Sandbox microVM, where it gets root access and a private Docker daemon to run Testcontainers against PostgreSQL. The agent discovers a case-sensitivity bug in a Java registration service, fixes it, and opens a draft PR exactly two files under src/—on a run that takes 11 minutes.

Science & Space

This company’s plans to deploy space mirrors could jeopardize the night sky for many

Jonathan O'Callaghan · Top News - MIT Technology Review · technologyreview.com · 5 min

Reflect Orbital’s planned orbital mirrors would brighten the night sky far beyond their target, a new study finds. A single satellite would appear 40 times brighter than the full moon in its five-kilometer beam, and a 400-satellite fleet could create a glow visible 80 kilometers away; astronomers say this is incompatible with dark skies, while the company disputes the assumptions.

AI & Machine Learning

A battle over 'Italian brainrot' could shape who owns AI art

Geoff Brumfiel · News : NPR · npr.org · 7 min

A California lawsuit over the AI-generated character Tung Tung Sahur asks whether seven prompts to an image generator count as human authorship. The character, revealed as an Indonesian kentongan drum, was made in 15 minutes by a young creator; it now appears in the hit Roblox game Steal a Brainrot. A French startup claims trademark rights while the game's maker argues the character is owned by no one.

Dispatches from O'Reilly: The right amount of spec for agentic development

Markus Eisele · Stack Overflow Blog · stackoverflow.blog · 11 min

The right amount of specification for agentic development is task-dependent: bounded work needs structured intent, deterministic flows need executable contracts, exploratory work needs boundaries not outcomes, and multi-agent pipelines need machine-checkable handoffs. The piece also argues that overspecification causes instruction drift, and that APIs designed for discoverability let code carry more of the specification load.

Culture & Essays

Birds Beyond Birding

Megan Cummins · Public Books · publicbooks.org · 18 min

Birding, the essay contends, is less about correct identification than about noticing entanglements of colonialism, climate, and joy. It weaves personal strolling in southern Ontario with three new books—Gannon's Birding While Indian, Lanham's Joy Is the Justice We Give Ourselves, and Despret's Living as a Bird—each treating birds as witnesses to broken worlds and prompts for repair.

The fog of hunger

Sarah Berg · Aeon · aeon.co · 16 min

A physician argues that the cultural demand for female thinness is a cognitive tax, drawing on her childhood dieting memories, the 1944 Minnesota starvation study, and modern research on restricted eating's toll on attention and memory. She notes GLP-1 drugs quiet the hunger signal but not the underlying architecture, and that cognitive and bone debts persist. A well-fed woman is harder to dismiss, she concludes.

In Purgatory Everyone Likes Crepes: My Time at a Greek All-Inclusive

Mathew Duggan · Mat Duggan · matduggan.com · 17 min

A travel snob grudgingly takes his family to a Greek all-inclusive and ends up defending the resort's absurdities. He encounters a Russian woman whose husband is fighting in the war, a taxi driver who claims he single-handedly saved the island from wildfire, and crowds who shrug off smoke from a neighboring island's fires—finally arriving at an unexpected fondness for the people he once scorned.

Boston & Local

Why opponents are fighting Massachusetts’ all-party primary ballot question

GBH News · wgbh.org · 7 min

Jordan Berg Powers of Voter Rights MA argues the top-two primary is a billionaire-backed effort to empower the most conservative voters, citing California's skyrocketing election costs and failed similar measures in Colorado and Arizona. He contends it would make races more expensive and urges ranked-choice voting instead.

MBTA Wins $140 Million to Run More Trains to Lawrence and Haverhill

Christian MilNeil · Streetsblog Massachusetts · mass.streetsblog.org · 5 min

A $140 million federal grant targets the Haverhill Line's single-track bottleneck, which currently forces half of all trains to turn back at Reading and limits service to Lawrence and Haverhill. The project includes high-level platforms at four stations and could enable 30-minute trains by 2030, though it excludes electrification.

Niche Corner

Kobo can run apps now

thepoet · Hacker News: Best · bandarlabs.github.io · 5 min

Cobalt brings a signed app store, launcher, and Rust SDK to Kobo e-readers, letting apps install over Wi-Fi after a one-time USB setup. Each app runs as an unprivileged static ARM binary, with a reboot restoring the stock reader; the store already offers arXiv, Sudoku, and a Morse-code frontlight sender. Only the Clara BW is hardware-tested, and the project is not affiliated with Rakuten.

Hacker News: 541 points · 188 commentsComments

Another Lap of Mont Blanc: Zach Miller’s Essay Before the 2026 UTMB

Zach Miller · iRunFar.com · 5 min

Zach Miller, lying on a couch in Argentière, reflects on a decade of Chamonix connections before his seventh UTMB. From a 2013 sick-bed meeting with two Frenchmen to a full-circle finish-line reunion in 2022, he explains why he keeps returning — for enjoyment, curiosity about a Western States–UTMB double, and the fans.

Comments

Sandustry is the first factory simulation game I've played that gets heaps right

Edwin Evans-Thirlwell · Rock Paper Shotgun Latest Articles Feed · rockpapershotgun.com · 6 min

Sandustry, an early-access factory builder from Lantto Games, simulates industrial waste as piles of physics-driven pixels that form strata and slopes, evoking real spoil heaps like the slate piles above Aberllefenni. The review argues this is the first factory game to communicate the physicality of byproducts, and notes waste is never permanent: sand residue can be burned and compressed into seed. Challenge comes from managing the heaps.

The road to epsilon-zero: Sequences of ordinals can be ordered

The Universe of Discourse · blog.plover.com · 3 min

After the series' coin-moving detours, infinite Nim collapses into a simple game: each heap is a finite sequence of ordinary numbers, and a move replaces any sequence with an earlier one in shortlex order. The post shows how this restates the rules without beans, infinite piles, or infinite-dimensional spaces, and promises the next article will finally reach epsilon-zero.

From the Blogroll

A Need for Speed

Jimmy Maher · filfre.net · 26 min

A self-described 'car guy' who owned quirky old Beetles, MGBs, and a Datsun 280Z recounts giving up cars entirely for a decade after moving to Denmark. He explains why he never cared for driving games, except for 1987's Test Drive, which he credits as the template for the 'aspirational lifestyle' driving sim — an 'aesthetic simulation' that let players dream of exotic cars without real-world consequences.

Hacker News: 5 points · 0 commentsComments

Browse the archive →