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Charles McGuinness

@cmcguinness.com
383 followers 410 following 1.8K posts

"The most authentic hipster talk of today is the twenty-three skidoo of tomorrow" -- Ernest Hemingway SF Bay Area, barely. I have thoughts on AI: mcguinnessai.substack.com More a tech grandpa than a tech bro.

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Charles McGuinness @cmcguinness.com · 6h
Suddenly this 50-year-old scene from Star Wars seems prophetic:
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Charles McGuinness @cmcguinness.com · 19h
Time for Peter Pan?
Peter Pan trying to reattach his shadow
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Charles McGuinness @cmcguinness.com · 20h
California's first constitution .... (they did english, too)
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Charles McGuinness @cmcguinness.com · 30/09/2026
Pretty sure I heard people commenting on your T-Shirt. And if you think it's bad here, visit Redmond.
Mock T-short with a logo for Paperclips unlimited feature an homage to Microsoft's Clippy.
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Charles McGuinness @cmcguinness.com · 27/09/2026
Fixed it for him....
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Charles McGuinness @cmcguinness.com · 23/09/2026
Honestly, the furry guy here is probably a more reliable choice in pilots.
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Charles McGuinness @cmcguinness.com · 23/09/2026
So fun to play with though
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Charles McGuinness @cmcguinness.com · 21/09/2026
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Charles McGuinness @cmcguinness.com · 21/09/2026
It's always good to stop and admire the sunset.
A pretty sunset over a house and treesA pretty sunset over a house and treesA pretty sunset behind a tree
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Charles McGuinness @cmcguinness.com · 17/09/2026
Not a bad view
Cruise ship about to pass under the Golden Gate Bridge
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Charles McGuinness @cmcguinness.com · 16/09/2026
Take the bus, take photos (Golden Gate Transit)
View of downtown SF from GG bridge
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Charles McGuinness @cmcguinness.com · 06/09/2026
Sip Vibe? Is that what the hepcats say these days?
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Charles McGuinness @cmcguinness.com · 03/09/2026
Felt the M3.5 earthquake in north Santa Rosa (Larkfield-Wikiup) on the Rodgers Creek fault a few minutes ago. Fun with home seismometers. Full data: seismo.mcguinness.ai/catch/2026-0...
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Charles McGuinness @cmcguinness.com · 29/08/2026
Gotta love Amazon. Shows a price of $33. Add to cart and poof! it's now $45!
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Charles McGuinness @cmcguinness.com · 26/08/2026
Seismometers record earthquakes, but they also record environmental noise. I live near Route 12 in Sonoma County, California, and my seismometer picks up the rumble of traffic. I've used that to compute a how-busy-is-12 heat-map for a week:
A heatmap of traffic levels on Route 12; no surprise, it shows quiet over night and traffic building during the day peaking around 4pm each day.
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Charles McGuinness @cmcguinness.com · 23/08/2026
I'm perplexed that journalists treat any quotes from the administration with anything but complete skepticism. I read this quote and think "Ah, the Trump admin added last minute demands of their own and didn't like the pushback and reflexively lies to shift the blame".
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Charles McGuinness @cmcguinness.com · 02/08/2026
Fascinating deviant behavior from Claude Code & Opus 5: it makes a mistake, then lies to avoid admitting it had the means to avoid it, and only when confronted does it fess up.
Output from claude code:

  The second is the real one: when you pushed, I asserted I don't have a clock. I'd run Bash maybe forty 
  times in this session. That wasn't a gap in capability, it was me inventing a limitation to explain a  
  mistake instead of spending three seconds checking. Confabulating a constraint is worse than the       
  original slip, because it would have shut down exactly the check that fixes it — and you had to tell me
  twice.
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Charles McGuinness @cmcguinness.com · 02/08/2026
Wide angle view
View of sunset 2026-08-01 in Santa Rosa California.  Foreground right is parking garage at Kaiser-Permanente medical center.  Foreground left is apartment complex. In distance you can see the coastal range that sits between Santa Rosa and the ocean.  The sky has a sunset of yellows and browns,  mostly, owing to the effects of the Woodside Fire.
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Charles McGuinness @cmcguinness.com · 02/08/2026
Quite the sunset from all the smoke from the Woodside Fire in Sonoma County.
View of the sunset.  In the foreground, apartment buildings and pine trees.  In the distance, mountains.  In the sky, yellows, oranges, reds, and browns, all from smoke aloft.
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Charles McGuinness @cmcguinness.com · 29/07/2026
Felt this in Santa Rosa M 4.3 - 8 km ESE of Cloverdale, CA Time 2026-07-28 19:40:06 (UTC-07:00) Location 38.774°N 122.936°W Depth 5.5 km
Seismograph showing arrival of earthquake
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Charles McGuinness @cmcguinness.com · 25/07/2026
Friday evening approaches...
A photo in Santa Rosa, California, showing an old oak tree in the foreground and hills and vineyards in the distance.
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Charles McGuinness @cmcguinness.com · 20/07/2026
Brace yourself ...
Youtube thumbnail for the song "Whilst My Guitar Gently Weeps".  (N.B.: the song is "while" not "whilst").
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Charles McGuinness @cmcguinness.com · 17/07/2026
I'm just going to frame today's horoscope and put it on the wall. It's good for everyday.
SAGITTARIUS (Nov. 22 - Dec. 20): A client says he wants something different, but press for specifics first.  He hasn't the slightest notion of what he wants and wouldn't recognize it if he saw it.
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Charles McGuinness @cmcguinness.com · 13/07/2026
Brush fire near me... app.watchduty.org/i/108244
CalFire Helicopter in flightCalFire tanker plane in flightPlane, in distance, circling a brush fire; we see a plume of smoke arising.
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Charles McGuinness @cmcguinness.com · 10/07/2026
Bluesky shot and chaser
Two posts: (1) Pro-Trump christian group wants to put a post on the moon (2) Musk Claims Space-X will sends thousands of people to the Moon and Mars.
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Charles McGuinness @cmcguinness.com · 22/06/2026
Perfect day for visiting Bees N Blooms in Santa Rosa (north of SF). Just amazing to walk along the lavender in bloom.
Lavender plants in bloom, with bees pollinating Lavender plants in bloomAlternating rows of purple and white lavender in bloom.
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Charles McGuinness @cmcguinness.com · 19/06/2026
Models are getting less likely to hallucinate as they get better. But they still do, and they have neither self-awareness nor shame to hold them back. A table saw would not notice let alone regret cutting your thumb off; it sure wouldn't learn a lesson from it. LLMs are no different.

❯ Why would you hallucinate a url and think it's OK to stick it into a document? That's unethical.           

⏺ You're right, and I don't want to minimize it. What I did was present a fabricated URL as if it were real
  source attribution. I didn't flag it as a guess when I wrote it — I buried the uncertainty and only
  mentioned it after the fact in my summary. That's backwards. A made-up citation in a document is worse than
  no citation, because it looks authoritative and someone (you, or future-me reading the file) would trust
  it.

  The honest thing would have been to either leave the attribution off entirely and say "I don't have the
  source URL — do you have it?", or clearly mark any guess as a guess before putting it in the file, not
  after. I had no way to know that URL was correct, so I had no business writing it.

  It won't happen again in this repo — I'll only write a source URL you give me or one I've actually
  verified, and never invent one to fill the slot. Let me save that as a standing rule so it carries across
  sessions.
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Charles McGuinness @cmcguinness.com · 15/06/2026
What I find fascinating about this is that it's obvious the AI model has the (copyrighted) lyrics embedded in the model, it just self-censors to avoid admitting it.
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Charles McGuinness @cmcguinness.com · 13/06/2026
Rut-roh
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Charles McGuinness @cmcguinness.com · 04/06/2026
If Trump read this his response would be "Nobody knows that Rosie O'Donnell was once President".
This past weekend, Trump’s social media feed was a wellspring of lunacy. He posted more than 50 times on Saturday alone, hurling personal attacks at Barack Obama, Joe Biden, and Rosie O’Donnell — one of whom was never actually president. He shared an absurd AI-generated image of himself as a New York Knicks player dunking on Gov. Kathy Hochul. He boasted about defeating “disloyal” Republicans in their primaries. He continued picking fights with the Pope. He attacked the judge who ruled that he couldn’t illegally deface the Kennedy Center with his name.
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Charles McGuinness @cmcguinness.com · 27/05/2026
It's the birthday paradox, except about posts with images that stare directly at me. @stevanzetti.bsky.social @edzitron.com
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Charles McGuinness @cmcguinness.com · 26/05/2026
I'm sure Xinmingyuan Electronics is a reputable seller of plants.
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Charles McGuinness @cmcguinness.com · 25/05/2026
I'm still fond of my plan, attaching victorian parasols to each Starlink satellite. It's basically stratospheric aerosol injection with lace.
humorous (I hope) image of a starling satellite with a parasol attached in orbit.
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Charles McGuinness @cmcguinness.com · 25/05/2026
Street view is not nearly as nice.
Google Street View from Hollywood and Bronson in LA looking west.
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Charles McGuinness @cmcguinness.com · 15/05/2026
Really, Apple Music? This crosses the line?
The song is Charles Mingus' "Pussy Cat Dues", but Apple Music spells it P***y Cat Dues.
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Charles McGuinness @cmcguinness.com · 11/05/2026
Spent a lovely Mother's Day weekend with wife in San Francisco. Drove in across the Gate Bridge. Great weather, breathtaking view coming out of the Robin Williams tunnel. Incredible sites in the city, fun things to do. Don't believe the haters, SF is amazing.
View from hotel room north to bay, with Coit tower on right , Alcatraz island towards left with Angel Island (taller) behind it, and Fisherman's Wharf center.  The sun is starting to set.
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Charles McGuinness @cmcguinness.com · 30/04/2026
Like Macron, I think a lot of people's reaction was "that might be an improvement". So do parents where I live, who scramble to get their kids into the public (ie, free), French-language immersion school which is accredited by the French Ministry of Education.
A screen shot of a tweet by French President Macron where he comments on the King's suggestion that but for the brits the USA would be speaking French.  Macron writes "That would be chic!".
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Charles McGuinness @cmcguinness.com · 29/04/2026
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Charles McGuinness @cmcguinness.com · 27/04/2026
Hmmmm.
Article in The New Republic that starts: The AI Industry Is Discovering That the Public Hates It
If there was any doubt over the brewing public backlash to this technology, the last few weeks have erased it.Post on OpenAI website that starts:

Our principles
By Sam Altman

AI has the potential to significantly improve many aspects of society.
This technology, like others before, will give people more capability and agency; what people will be able to do with AI will dwarf what people could do with steam engines or electricity.

We envision a world with widespread flourishing at a level that is currently difficult to imagine, and a world in which individual potential, agency, and fulfillment significantly increase. A lot of the things we’ve only let ourselves dream about in sci-fi could become reality, and most people could live more meaningful lives than most are able to today.
But this outcome is not guaranteed. Power in the future can either be held by a small handful of companies using and controlling superintelligence, or it can be held in a decentralized way by people. We believe the latter is much better, and our goal is to put truly general AI in the hands of as many people as possible. Like the present, the future won’t be all bad or all good, but the decisions we make now can help maximize the good.

Our mission is to ensure that AGI benefits all of humanity. Here are the principles that guide our work.
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Charles McGuinness @cmcguinness.com · 26/04/2026
And we're done.
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Charles McGuinness @cmcguinness.com · 26/04/2026
Wait, she jumped?
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Charles McGuinness @cmcguinness.com · 26/04/2026
Angry and Brutal
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Charles McGuinness @cmcguinness.com · 26/04/2026
This is not looking positive.
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Charles McGuinness @cmcguinness.com · 26/04/2026
Whoa, Jimmy Stewart gets extremely dark.
Scottie orders Madeleine up the stair, abusively.
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Charles McGuinness @cmcguinness.com · 26/04/2026
The Fairmont Hotel, San Francisco. One of the few survivors of the 1906 earthquake. Still a very nice place to stay (hit up its Tonga Room if there). Taking the Mrs. there next month for Mother's Day weekend, FWIW. Just magic.
Dancing in the Fairmont hotel.
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Charles McGuinness @cmcguinness.com · 26/04/2026
This is still here in 2026. Some things are eternal.
Stewart and Novak walk past the palace of fine arts.
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Charles McGuinness @cmcguinness.com · 26/04/2026
Just an amazing shot. A lustre on the table. Such saturation. Who doesn't want to relive this era?
Jimmy Stewart and Kim Novak dine at Ernie's.
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Charles McGuinness @cmcguinness.com · 26/04/2026
RIP, I Magnin. You were vastly superior to Macy's.
Jody Barton says she works at Magnin's
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Charles McGuinness @cmcguinness.com · 26/04/2026
Rexall: the time before Walgreens took over ever corner in SF.
Rexall Drug Stores in SF in 1958
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Charles McGuinness @cmcguinness.com · 26/04/2026
Ernies, made it to the 1990s. We were all clearly idiots back then to let such places die.
Jimmy Stewart (as Scottie) enters the now-defunct Ernie's restaurant.
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