June 16, 2026

Curator's note: tonight's selection is, almost accidentally, a set of pieces about prying open black boxes. A wristwatch, a compiled binary, a smart bulb, a recruiter's job offer, a video game's RNG, a forever chemical, a 26-year-old cold case, a license-plate camera network — each item is somebody refusing to take an opaque object on its own terms and instead taking it apart to see how it actually works. Read in that order, the edition reads like a small treatise on reverse-engineering as a civic habit.

1. Mechanical Watch (2022) · ciechanow.ski https://ciechanow.ski/mechanical-watch

Bartosz Ciechanowski's interactive deep dive into how a mechanical wristwatch works has resurfaced on Hacker News, and it remains, four years on, one of the best things ever made on the internet about how anything works. Scroll through it slowly — the gear trains animate, the escapement clicks, and by the end you understand a machine you probably wear every day and have never properly seen. The kind of piece that rewrites what an explainer can be.

2. The Time the x86 Emulator Team Found Code So Bad They Fixed It During Emulation · Old New Thing (Microsoft Devblogs) https://devblogs.microsoft.com/oldnewthing/20260615-00/?p=112419

Raymond Chen on a small, marvelous bit of computing-history weirdness: an x86 emulator team encountered third-party code so broken that the cleanest path forward was to patch it on the fly, mid-emulation. A vignette of the quiet labor that keeps decades-old software running on hardware it was never written for.

3. Banned Book Library in a Wi-Fi Smart Light Bulb · Richard Osgood https://www.richardosgood.com/posts/banned-book-library

A maker pulls apart a cheap Wi-Fi smart bulb, finds enough storage and a usable web stack inside, and turns it into a host for a banned-book library that lives on someone's nightstand. Half clever-repurposing, half political object — and a reminder that "smart" consumer hardware is almost always a tiny Linux box looking for a better job.

4. A Backdoor in a LinkedIn Job Offer · roman.pt https://roman.pt/posts/linkedin-backdoor

A forensic write-up of a supply-chain attack that arrived as a recruiter's pitch: an unsolicited LinkedIn job offer, a "take-home coding exercise," and inside the exercise, a planted backdoor. Roman walks the whole chain, from the bait through the obfuscated payload to who, ultimately, was hunting whom. A useful piece to send to anyone you know who freelances.

5. Correlated Randomness in Slay the Spire 2 · tck.mn https://tck.mn/blog/correlated-randomness-sts2

The randomness in a video game is rarely as random as it feels, and rarely for accidental reasons. Here a player reverse-engineers Slay the Spire 2's RNG and shows where the designers quietly nudged the dice — which cards co-occur, which rewards are gated, where streaks live. A small, lovely example of primary-source game analysis done in public.

6. Trinket.io Was Shutting Down, So We Saved It · trinket.strivemath.org https://trinket.strivemath.org

Trinket — the in-browser code sandbox that a generation of kids learned Python and HTML on — was being shut down by its owners. A small team copied the entire platform, stood up a mirror, and is hosting it for free at strivemath. The disappearance and rescue of public-good educational tools is one of the quiet ongoing stories of this decade; this is a good one.

7. Scientists Just Found a Hidden Weakness in Forever Chemicals · ScienceDaily https://www.sciencedaily.com/releases/2026/06/260615033846.htm

PFAS — the famously indestructible "forever chemicals" — turn out to have a mechanistic weak point: hydrogen radicals generated from plain water under UV light can cleave the carbon-fluorine bonds that make them so persistent. No added chemistry, no exotic reagent. What I like here is how clean the mechanism is once you see it; a long-running real-world problem with a route out that fits on a single diagram.

8. After 26 Years, Investigators Identify Camper Whose Body Was Found in Olympic National Park · Backpacker https://www.backpacker.com/news-and-events/news/camper-found-olympic-national-park-identified

In 2000, a researcher walking off-trail in Olympic National Park found a human skeleton inside a sleeping bag. For 26 years nobody knew who he was. Forensic genealogists finally matched his DNA to distant relatives this spring. A quiet PNW backcountry mystery that also doubles as a methodology story — how a cold case actually thaws.

9. Flock Cameras Are Being Used for Stalking · Schneier on Security https://www.schneier.com/blog/archives/2026/06/flock-cameras-are-being-used-for-stalking.html

Bruce Schneier rounds up more than a dozen documented cases of police officers using the Flock license-plate-reader network to obsessively, illegally track individuals — ex-partners, journalists, people they had personal grudges against. The list is short; the pattern is now unmistakable. Worth keeping on hand the next time someone tells you a surveillance system will be used only as advertised.