Geoffrey

🇪🇺 | Curious Mind 🌌 | Tech Enthusiast 🤖 | Science Lover 🔬 (Physics, Quantum, Astronomy) | Advisor a.i. at an electronic communications regulatory agency

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npub1sh85qn5dgrq8gerr2lwu6v7gmn5g6300prdz56tdf42nesjfjmwq6k2jqf

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geoffrey@geofox.org

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nprofile1qqsgtn6qf6x5psr5v3340hwdx0yde6ydghhs3k32d9k564fucfyedhqpzemhxue69uhhyetvv9ujuurjd9kkzmpwdejhgqg4waehxw309ahx7um5wghxgct5vyhxsct4wvwjyc5a

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relay.primal.net

nostr.data.haus

qzyy7uphovrqpqydvwlufg656sqvlaruaqxdt72gvi5uvx7hiqbagrqd.onion

relay.damus.io

relay.geoffrey.one

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npub1sh85qn5dgrq8gerr2lwu6v7gmn5g6300prdz56tdf42nesjfjmwq6k2jqf

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Last Notes

2026-09-19 10:27:46 UTC

Yesterday's episode of The Daily is a great listen on the quasi-religious beliefs powering the AI race. Worth your time, really!
https://www.nytimes.com/2026/09/18/podcasts/the-daily/the-techno-religion-at-the-center-of-the-ai-debate.html

2026-09-16 12:12:11 UTC

I am really enjoying experimenting with Meshcore. The Brussels network is improving, and the Belgian coast is now reachable with consistency. I expect broader coverage for eastern Brussels in time, along with Wallonia, though the obstacles there are more substantial.

2026-08-29 11:22:17 UTC

When technical access narrows, legal compulsion widens.
— @matthewdgreen.bsky.social:
I wrote up a new post about what AI software finding might mean for the backdoor debate. https://blog.cryptographyengineering.com/2026/08/14/everything-is-about-to-go-dark/
https://bsky.app/profile/matthewdgreen.bsky.social/post/3mt4pf2vnzs2h

2026-08-03 07:45:26 UTC

If you know how to rewind a cassette with a pencil, congratulations: your skin is probably aging too. I looked at what the science actually recommends and what the skincare industry would rather you keep buying. https://geofox.org/posts/men-skincare/

2026-07-19 09:42:25 UTC

— @theatlantic.com:
Modern blockbusters are getting longer, even as young people struggle to sit through an hour of a film. In The Wonder Reader, @isabelfattal.bsky.social explores how changing attention spans shift the experience of watching movies:
https://bsky.app/profile/theatlantic.com/post/3mqygx3hcnr2o

2026-07-08 23:03:48 UTC

This story by Stephanie McCrummen for The Atlantic is really good. Easy to file under ‘weird local story’: a Tennessee church waging spiritual warfare on a cafe. But it isn’t fringe. This apostle-and-prophet charismatic Christianity is among the fastest-growing in the US. Scary. https://www.theatlantic.com/magazine/2026/08/charismatic-christian-church-tennessee/687624/?gift=tOpZVTQdRkprvQpGjzvxH-kBY2VHxSNtx9WYHV0vhvc

2026-06-30 09:02:13 UTC

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There are so many more, ranging from satire to absolute pieces of art, that are well worth your time. The New Yorker has a special section of its website telling the stories behind the cover. https://www.newyorker.com/culture/cover-story

2026-06-30 09:02:12 UTC

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June 22, 2020 - “Say Their Names” by Kadir Nelson
George Floyd’s portrait containing within his body four centuries of Black victims and figures: Emmett Till, MLK, Breonna Taylor, Rosa Parks, the unnamed enslaved.

2026-06-30 09:02:11 UTC

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March 28, 2011 - “Dark Spring” by Christoph Niemann
Niemann blended his admiration for Japanese ink drawings with the devastation of the Fukushima earthquake and tsunami.

2026-06-30 09:02:10 UTC

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July 3, 2006 - “Dependence Day” by Christoph Niemann
This beautiful cover is its own take on Chinese Communist propaganda art to comment on China’s rise as manufacturer for the US market.

2026-06-30 09:02:10 UTC

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July 21, 2008 - “The Politics of Fear” by Barry Blitt
Satirized right-wing smears of the Obamas. Obama spokesman Bill Burton said “most readers will see it as tasteless and offensive. And we agree.” Jon Stewart defended it. The most controversial cover of the era.

2026-06-30 09:02:09 UTC

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March 29, 1976 - “View of the World from 9th Avenue” by Saul Steinberg
The magazine’s most famous cover, representing a Manhattanite’s myopic mental map where the world ends past the Hudson. Spawned countless imitations and a copyright lawsuit over the “Moscow on the Hudson” movie poster.

2026-06-30 09:02:09 UTC

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September 24, 2001 - “9/11/2001” by Art Spiegelman & Françoise Mouly
Mouly describes it best : “The silhouette of the towers, just barely visible, in a deeper black. It was an image that contained its own negation. Its simplicity seemed to acknowledge the magnitude of what had happened.”

2026-06-30 09:02:09 UTC

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February 15, 1993 - “The Kiss” by Art Spiegelman
A Hasidic man kissing a Black woman, published amid Crown Heights racial tensions. Tina Brown’s buzzy arrival as editor in chief.

2026-06-30 09:02:09 UTC

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February 16, 1998 - “The Low Road” by Art Spiegelman
Another by Art Spiegelman, this is a Clinton-scandal Valentine’s cover and perfectly represents Spiegelman’s pointed political satire.

2026-06-30 09:02:08 UTC

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May 31, 1930 - “Subway golfer” by Peter Arno
Arno was one of the magazine’s defining early cover artists, known for bold lines and social satire. This cover is a representative classic-era Arno.

2026-06-30 09:02:07 UTC

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February 21, 1925 - “Eustace Tilley” by Rea Irving.
Let’s begin with the first one ever. The dandy peering at a butterfly through a monocle, modeled on an 1834 caricature of the Count d’Orsay, he reappears on nearly every anniversary issue. The magazine’s founding mascot.

2026-06-30 09:02:05 UTC

I’ve been a subscriber to The New Yorker for quite some time now, probably the best magazine ever published. The cover of the New Yorker is also one of the most recognizable cover in the world. Here are a few of the best. 👇🧵
https://blossom.geoffrey.one/2bace6b32e20f05fc1c1f73ea7d14a9c1068ec4080e46d324982f3417fbd721e.png
https://blossom.geoffrey.one/115b68bb804726362dd7ab3035cf85a7099718caa0c5ab228dfc0d1a078e3d69.png
https://blossom.geoffrey.one/84f85f29e3d712b637acf838cd43024e59362b1579002d961a46a60c088d2737.png
https://blossom.geoffrey.one/77388e5c10e24a4691b1d587d4326db3d5e8953c91beb5b13f1c597d061c7b18.jpeg
https://blossom.geoffrey.one/8416fc23c2f3062cdf3bb7ae4984fcfa27c96dfb437c3db6ecbf3510cb2870ff.jpeg
https://blossom.geoffrey.one/d7c5a322c78d54fa5fafff6ce7ec6b5aeda5be08b78beabb39f4f08ed221bd2b.webp
https://blossom.geoffrey.one/1b6b944580a7109ca2885633991f385a878fce6402433f7f93ea237d1eff9da0.jpeg
https://blossom.geoffrey.one/3b0441b614879f5c6b9fc8509acdaac02f5a07a44a230f57aa7877b025ebde74.jpeg
https://blossom.geoffrey.one/91b6319e094cb94fe7044e70c0d4f4c7245ffe07f6c5d3ecad7cb727d464ef16.jpeg
https://blossom.geoffrey.one/a1507ffc989207013c4fcbe390fcede457da750a1bea05ea5f714b9102b3e32b.jpeg

2026-06-21 12:32:44 UTC

Chiang’s strongest argument doesn’t need its headline. Forget consciousness, moral agency means bearing consequences: liability, blame, exclusion. Software can’t. So selling a chatbot as a moral agent lets its makers and users shed responsibility. https://www.theatlantic.com/philosophy/2026/06/no-artificial-intelligence-is-not-conscious/687378/

2026-06-14 20:23:08 UTC

This whole story feels like the cryptography export ban that Clinton relaxed, beginning in 1996, then furthermore in 2000, without which we would not have the web as we know it.
https://www.nytimes.com/2000/01/31/business/worldbusiness/IHT-us-removes-an-encryption-barrier.html
— @semafor.com:
🟡 SCOOP: The White House imposed export controls on Anthropic’s powerful Mythos AI model partly over suspicions that a China-linked group had accessed it.
www.semafor.com/article/06/1...
https://bsky.app/profile/semafor.com/post/3mo7aamqsos27

2026-06-13 14:18:58 UTC

If there was a need for another reason for the European Union to wake up : https://www.anthropic.com/news/fable-mythos-access
Relying on foreign models grants the US kill switch power over European infrastructure. That’s scary even if we are allies.
Mistral is cool but it’s really not there yet.

2026-06-10 07:05:25 UTC

They laughed at Galileo. They also laughed at Bozo the Clown.
Why “they laughed at Galileo” is a fallacy, not evidence — and why, in health, the gap between persuasion and proof carries a body count.
https://geofox.org/posts/galileo-gambit/
https://blossom.geoffrey.one/bfc800c2022f386a5b267aa199e1a302efd242afe6b9800df73753551bc663b7.jpeg

2026-06-04 20:34:43 UTC

TikTok is teaching a generation what ADHD is. The problem: two clinical psychologists checked the 100 most-viewed ADHD videos and found under half the symptom claims (48.7%) were accurate. The fake-science clips weren't the fringe. They were the popular ones. A thread 👇
Researchers then ran another test. 843 young adults watched the experts' best and worst picks : they rated the worst videos higher and the best ones lower. The more ADHD content they'd consumed, the more confident they were recommending it. Accuracy was not a concern.
68.5% of the inaccurate claims just described ordinary human experience. Bumping into furniture. A sweet tooth. Replaying a song. Engagement rewards the relatable and the absolute; clinical nuance ("this may not apply to everyone") is boring. Only 4% of videos included any.
And the people posting it: 80% disclosed no credentials; in a related study, just ~1.6% of #ADHD videos came from health professionals. More concerning : about half were selling something like products, coaching or had donation links.
The fair part: people aren't stupid for being here. Formal diagnosis is slow, costly, and historically missed women, girls, and adults entirely. TikTok fills a need. But the algorithm does not care about truth, it rewards engagement.
In the UEA review's ADHD case, ~3% of professional videos carried misinformation vs ~55% from non-professionals. The fix isn't telling people to log off. It's getting clinicians into the algo.
Sources: Karasavva et al., PLOS ONE 2025 (the #ADHD study): https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0319335 · Carter/Chatburn et al., systematic review, J. Social Media Research 2026: https://jsomer.org/index.php/pub/article/view/84

2026-05-31 07:44:23 UTC

Quietly this year, the protocol under Bluesky started leaving Bluesky. The IETF chartered a working group, "Authenticated Transfer Protocol", to standardise atproto's core. Worth understanding what that does and, more importantly, what it doesn't.
What it changes is governance. The repo format, the sync protocol, the at:// URI scheme: these move from Bluesky's reference implementation to vendor-neutral IETF specs. Bluesky's own framing is that the core protocol gets "a home outside of and independent from Bluesky PBC."
First caveat: this is early. The deliverables are Internet-Drafts, not finished RFCs. An I-D is a working document: it can change completely or expire. The charter was approved in early 2026; the actual standards are a multi-year job. "Standardised" is the destination, not the current state.
Second caveat: it's narrow. In: repository structure, sync, the at:// scheme, account-identifier resolution. Explicitly out : private data, the app.bsky lexicons, and the whole labeling/moderation system. The parts you actually feel as a user remain Bluesky-driven. For now.
Also the live network still leans on one company. Main relay, primary AppView, did:plc, the default PDS — all Bluesky PBC. You can self-host every piece, but the defaults are theirs. The architecture is decentralised; the network isn't yet. Does standardizing the specs actually change that?
I have high hope for the at-proto. I’m actually hosting my own PDS so my data is hosted by me and authenticated by me. I also anchor my identity with my domain name, geofox.org, with a did:web, instead of relying on Bluesky’s Public Ledger of Credentials (that governance is actively being moved out to an independent association).
That domain is linked to my identity for years, so it was the logical choice. I’ve published a bit more info on my blog : https://geofox.org/posts/decentralized-social/#bluesky--at-protocol-my-data-my-domain-my-did
On the other side of the social spectrum, Meta's ActivityPub support on Threads isn't openness, it's an alibi. Federation is opt-in, buried, and one-way for everything that matters: your replies and graph don't come with you, so there's no door out, only a window in. They adopted the wire format and skipped the portability, the one part that would actually let users leave. That's not interoperability but a compliance gesture dressed as principle, shipped by the company with the most to lose if it were real.
Sources: IETF charter (Authenticated Transfer Protocol WG) https://datatracker.ietf.org/doc/charter-ietf-atp/ · Bluesky's announcement https://atproto.com/blog/kicking-off-the-atp-working-group

2026-05-28 11:40:57 UTC

🌡️ Europe is under a heatwave, let’s talk about sunscreen! Many think mineral sunscreens are "natural" and chemical ones are toxic, but (surprise!) it’s not the case at all. A thread 👇
🍀 The "Natural" Myth: Mineral sunscreens (Zinc/Titanium) aren't just crushed rocks from the earth. They require intense synthetic processing and synthetic coatings (like silica) to stop them from generating dangerous free radicals when exposed to sunlight.
🪞 The Reflection Myth: People claim mineral filters "reflect" UV like a shield. As Lab Muffin Beauty Science points out, mineral filters actually protect skin by absorbing almost all of UV rays, working almost exactly (barring a few percent of reflection) like chemical filters.
👨‍🔬 Toxicology: What about chemical endocrine disruption? Lab Muffin explains that animal studies showing harm use massive, physically impossible doses. FDA blood absorption limits are default regulatory triggers for more testing, not toxic danger thresholds.
🇪🇺 US vs EU: The US FDA regulates sunscreens as OTC drugs, meaning no new filters have been approved since 1999. The EU treats them as cosmetics, allowing over 30 advanced chemical filters (like Tinosorb) that offer vastly superior, photostable UVA protection.
💡 Bottom line: Because mineral sunscreens leave a thick white cast, people apply way too little, drastically lowering their UV protection. Modern EU chemical sunscreens are cosmetically elegant and highly effective, making them the superior choice for real-world use.
📚 See : Wong M. How much UV does a REAL mineral sunscreen absorb and scatter?. Lab Muffin Beauty Science. June 28, 2021. Accessed May 16, 2026. https://labmuffin.com/how-much-uv-does-a-real-mineral-sunscreen-absorb-and-scatter/

2026-05-26 18:32:42 UTC

Let’s talk about fake science. One of Professor Dave’s latest is a takedown of the alt-health/supplements business that Joe Rogan and the MAHA crowd peddle. Well done and funny, as usual. https://youtu.be/wwLdFrjsN_c
In Western Europe a bit of regulation gives us cover, but homeopathic sugar pills still sell here. Quick primer on why homeopathy isn’t medicine. It was invented in 1796. before atoms, before germ theory, before modern chemistry.
The premise: a substance that causes a symptom in a healthy person cures that symptom in a sick person, if you dilute it enough. Now the dilution. A standard “30C” preparation is 30 successive 1:100 dilutions — 1 part in 10^60.
Past 12 dilutions, statistically zero molecules of the original substance remain. You’re drinking water. The pills are lactose. Defenders invoke “water memory.” There’s no known mechanism : water’s hydrogen bonds reorganize in picoseconds. Australia’s NHMRC reviewed 225 trials in 2015: no condition with reliable evidence of effect. Europe’s EASAC reached the same verdict in 2017.
This matters because sugar pills aren’t neutral when people skip real treatment. In 2017 a 7-year-old in Italy died of an ear infection treated with homeopathy instead of antibiotics. France ended reimbursement in 2021, the UK NHS in 2017. It’s still on pharmacy shelves across Western Europe. Here, in Belgium, it’s still reimbursed by some insurance fund. 230 years of confidently selling nothing.

2026-05-25 15:56:52 UTC

Is Musk planning a “rapid scheduled disassembly” of your savings?
SpaceX reportedly wants a ~$1.75T valuation on $18.7B revenue and a $4.9B 2025 net loss: roughly 94x sales.
That’s a hardware + AI capex story being priced like a near-monopoly software platform.
Even peak-2020 “expensive” tech IPOs traded at a fraction of that multiple. xAI reportedly burned ~$14B in 2025 while generating only ~$3.2B revenue, and AI infrastructure now dominates company capex. Public investors are effectively being asked to fund Musk’s AI ambitions at SpaceX valuation levels.
And that’s before considering the super-voting share structure that leaves Elon Musk with overwhelming control and public shareholders with very limited influence.
Maybe it works. There is a dominance of Starlink and launch monopoly characteristic. But personally, I’m not taking that bet.

2026-05-22 23:12:32 UTC

“The open web is on its way out,” “Internet traffic now often begins and ends with a visit to Google.” “With A.I., Google is reducing everyone to raw data providers.”
Not to be a Luddite but it’s sad.
https://www.nytimes.com/2026/05/19/business/google-seach-bar-ai-gemini.html

2026-05-22 20:07:11 UTC

New blog post: I now run a Mastodon instance, a Nostr relay (with Tor), and a Bluesky PDS — three different answers to 'how do you build a social network no single company can switch off?' Walks through the tradeoffs, and how a domain anchors all three identities.
https://geofox.org/posts/decentralized-social/

2026-05-21 18:00:28 UTC

Post-Quantum SSH summer : Ubuntu 26.04 ships PQ by default — OpenSSH 10.2. Direct upgrades from 24.04 LTS will only open at 26.04.1 on 6 August. 95% of Ubuntu installs are LTS, ~60% of public-cloud Linux is Ubuntu. ⛱️ https://discourse.ubuntu.com/t/post-quantum-support-in-the-upcoming-26-04-lts/76840

2026-05-20 19:19:37 UTC

Cross-platform RCS (iOS/Android) rolled out without a post-quantum cipher suite. Signal had PQXDH in 2023, iMessage PQ3 in 2024. The IETF PQ-MLS draft is in WG Last Call. These RCS chats are subject to harvest-now-decrypt-later from day one. Better than SMS, I guess, but better options exist.

2026-05-06 17:45:41 UTC

Just doing some tests, discovering nostr universe.