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Carl Horsley

@carlhorsley

Intensivist at Middlemore; Resilient Healthcare + Te Ao Māori; MSc HF & System Safety, Lund. All musings my own #medsky #safetysky #icu

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20.09.2023
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Latest posts by Carl Horsley @carlhorsley

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Time to pass a law that any party spokesperson of media outlet that opines with hindsight reckons on pandemic management has to show this chart in the background at all times #nzpol

10.03.2026 02:49 👍 304 🔁 139 💬 4 📌 4

What folk seem to forget is that the same people [surgeons & anaesthetists mostly] who work in public health part-time, also work in private part-time. The key limitation is access to a fully staffed and functioning theatre. Just where does Brown think he will magic the people from?

10.03.2026 03:20 👍 34 🔁 14 💬 5 📌 0
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Interested in how to get public transport that works, even in traffic-heavy suburban cities?

My book lays out the ins and outs of transit planning, with theory and practice grounded in years of experience on what works.

Now available in print and eBook formats: www.amazon.com.au/dp/B0GRPZ4VHD/

08.03.2026 22:59 👍 15 🔁 9 💬 1 📌 2

For those who have forgotten the past 40 years:

Tax cuts for the rich
...don’t trickle down

Boosting military spending
...doesn’t bring peace

Slashing regulations
...doesn’t create jobs

Folks, we’ve seen this all before.

07.03.2026 19:01 👍 21064 🔁 6997 💬 558 📌 253

It was very strange, especially after what went on around the vilification of Jacinda.

Almost a tidal phenomenon, rather than a rational assessment based on an understanding of context and history.

07.03.2026 02:23 👍 3 🔁 0 💬 1 📌 0
Pied oystercatchers with Bar-tailed godwits behind. Lots of them.

Pied oystercatchers with Bar-tailed godwits behind. Lots of them.

Pied stilts in the mudflats

Pied stilts in the mudflats

Juvenile pied stilt in water

Juvenile pied stilt in water

Bar-tailed godwits huddled together in an estuary

Bar-tailed godwits huddled together in an estuary

Birds. So many birds.

Great day out at Miranda
shorebirds.org.nz

07.03.2026 02:19 👍 4 🔁 0 💬 0 📌 0
Luxon sings his Backbenchers entrance song
Luxon sings his Backbenchers entrance song YouTube video by 1News

There were signs...

youtu.be/rMePrwQfT5I?...

07.03.2026 02:13 👍 1 🔁 0 💬 1 📌 0

Who's presenting that, Rhea? Good to see it.

06.03.2026 01:55 👍 1 🔁 0 💬 1 📌 0

At some point we will have a conversation about the bogus claim that running a financially successful company equips you for leadership more broadly.

03.03.2026 21:04 👍 2270 🔁 458 💬 62 📌 18
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"The Arithmetic Of Climate Failure". my response to a series of questions posed by Alma Asfalto & published last week.

A link to the publication (with abridged answers) and including my full answers is at: climateuncensored.com/the-arithmet...

02.03.2026 15:56 👍 43 🔁 23 💬 3 📌 6

Mode error and unruly technology:

What is it doing now?
What will it do in future?

It's strange seeing the issues raised in joint cognitive systems coming back repeatedly...

www.researchgate.net/profile/Davi...

02.03.2026 09:34 👍 1 🔁 0 💬 0 📌 0

The media framing of "human error" linked to charges laid is where there problem lies.

But issues of mode uncertainty and how the way technology shapes cognition are common, as you know. Behaviours that seem tragicomic may reveal the difficulty faces in understanding what was actually going on.

02.03.2026 08:07 👍 0 🔁 0 💬 1 📌 0
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Wayback Machine

For more reading:

"Those Found Responsible Have Been Sacked" - Cook
citeseerx.ist.psu.edu/document?rep...

How Complex Systems Fail - Cook
how.complexsystems.fail

There is Safety in Power or Power in Safety - Dekker/Nyce
www.sciencedirect.com/science/arti...

02.03.2026 06:42 👍 2 🔁 0 💬 0 📌 0
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Charges laid over the sinking of Navy ship off Samoa’s coast Three officers are facing charges in the Court Martial in connection to the ship’s sinking in 2024.

Really disappointing to hear this news

"Human error" is the starting point of an investigation, not the conclusion. Lots of organisational issuesabd messy technology that are common in modern accidents.

Simple narratives and scapegoating= blame, not learning

www.stuff.co.nz/politics/360...

02.03.2026 06:35 👍 1 🔁 0 💬 2 📌 0
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‘Unbelievably dangerous’: experts sound alarm after ChatGPT Health fails to recognise medical emergencies Study finds ChatGPT Health did not recommend a hospital visit when medically necessary in more than half of cases

Study finds ChatGPT Health did not recommend a hospital visit when medically necessary in more than half of cases. www.theguardian.com/technology/2...

27.02.2026 19:47 👍 1275 🔁 724 💬 43 📌 189
Simeon Brown MP 

Labour’s COVID-19 restrictions were some of the most stringent in the world, and Kiwis paid the price.

New Zealanders remember not being able to visit loved ones in hospital, struggling to secure a managed isolation spot just to return home, and keeping their kids home from school for months on end.

Aucklanders felt this more than most, with Labour’s decisions leading to the region spending more than six months in lockdown – the longest of any region in the country.

The uncertainty, the isolation, and the toll it took on families, small business owners, and communities were all a result of decisions made during that time. Those decisions had a significant impact on everyday Kiwis, and it is important we take the time to fully understand why those decisions were made, so that any future response properly weighs the health and economic needs of all New Zealanders.

Our Government expanded a Royal Commission Inquiry into the COVID-19 response, and yesterday we received their final report. The Prime Minister has asked me to lead the Government’s response to its recommendations – because New Zealanders deserve answers, and we are committed to making sure the lessons of that period are never forgotten.

Simeon Brown MP Labour’s COVID-19 restrictions were some of the most stringent in the world, and Kiwis paid the price. New Zealanders remember not being able to visit loved ones in hospital, struggling to secure a managed isolation spot just to return home, and keeping their kids home from school for months on end. Aucklanders felt this more than most, with Labour’s decisions leading to the region spending more than six months in lockdown – the longest of any region in the country. The uncertainty, the isolation, and the toll it took on families, small business owners, and communities were all a result of decisions made during that time. Those decisions had a significant impact on everyday Kiwis, and it is important we take the time to fully understand why those decisions were made, so that any future response properly weighs the health and economic needs of all New Zealanders. Our Government expanded a Royal Commission Inquiry into the COVID-19 response, and yesterday we received their final report. The Prime Minister has asked me to lead the Government’s response to its recommendations – because New Zealanders deserve answers, and we are committed to making sure the lessons of that period are never forgotten.

#NZpol I’m not liking the tone or angle he takes with this. It feels like foreshadowing pushing negative views "because it was Labour".

This would be rewriting the past to suit election-year politics.

Many of us warned that the second "add-on" phase looked to include political motivations,

1/n

01.03.2026 07:18 👍 52 🔁 15 💬 7 📌 6
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I often hear "AI transcription is great, it will allow me to focus on spending more time with my patients"

The Law of Stretched Systems would like a word...

www.rnz.co.nz/news/nationa...

28.02.2026 06:27 👍 5 🔁 1 💬 0 📌 0

If your GP practice is using an AI scribe I have two suggestions: first, demand clarity on privacy (storage, access, policy). Second, ensure they personally verify accuracy. We’ve seen clinically important errors, and doctors who couldn’t explain where the data was going. Patient safety failures.

27.02.2026 23:18 👍 67 🔁 36 💬 4 📌 1
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Have benefit sanctions actually worked? One economist says no - largely because of a major economic problem.

www.rnz.co.nz/news/busines...

27.02.2026 22:50 👍 0 🔁 0 💬 0 📌 0
View of lake with clouds reflected. A path curves beside it. In the background is a fjord stretching into the distance.

View of lake with clouds reflected. A path curves beside it. In the background is a fjord stretching into the distance.

27.02.2026 09:34 👍 4 🔁 0 💬 0 📌 0

Three weeks ago I spent a few days in one of our global dark sky sanctuaries in Rakiura Stewart Island New Zealand. Never has deep time felt so real or so close.

But every now and then one of Elon's dumbfuck satellites would interrupt the eternal rhythms of the stars. Let's not let it get worse.

27.02.2026 05:27 👍 512 🔁 151 💬 17 📌 4

Job market so bad that even former Prime Ministers moving to Australia

26.02.2026 21:28 👍 95 🔁 19 💬 6 📌 2
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Quarantine Nation – New Zealand Podcasts A lethal virus. A drastic lockdown. A nation turned upside down. .

Looks like this podcast series of a trailer and 8 episodes. It took some finding, but the nzpod page does have an actual RSS link, making it actually a podcast rather than just sparkling streaming audio.

www.stuff.co.nz/nz-news/3609...
www.youtube.com/watch?v=uo3i...
nzpod.co.nz/podcast/quar...

25.02.2026 23:33 👍 4 🔁 2 💬 0 📌 0

Good to be part of this important piece.

"The future seems improbable, the past incredible"

The retrospective reckons don't really capture the interesting and values based decision making that was happening early on.

26.02.2026 09:41 👍 1 🔁 0 💬 0 📌 0
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Carney on climate leadership:

"Actions to reduce tail risks have no immediate political benefit...

But true leaders are stewards of the organisation, system or society they inherit. They recognise that leadership is temporary and they are custodians"

Short term thinking = discounting the future

26.02.2026 06:40 👍 2 🔁 0 💬 0 📌 0

I love how quickly New Zealand media gloss over that Jacinda Ardern is still the most popular politician according to polls measuring favourability, and she always was as Prime Minister as well which was always contrary to the dominant gallery narrative that she had become a figure of division

26.02.2026 04:09 👍 329 🔁 63 💬 8 📌 5

The launch of every piece of AI-driven surveillance/security/criminal justice software basically goes like this:

AI COMPANY: this is an error free, bias free, state of the art, highly intelligent software system

Two Weeks Later: …aaaand it’s racist

25.02.2026 15:59 👍 638 🔁 299 💬 12 📌 6
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Hey, at least Chuck and Mary will have a Beggar-free Britomart to enjoy! I dive deeper over at my Substack: yeehawtheboys.substack.com/p/chuck-and-...

25.02.2026 04:31 👍 165 🔁 70 💬 2 📌 3
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Except literally every data analysis or model I've ever asked AI to build has contained at least one error: www.nature.com/articles/d41...

Common response: "But someone just needs to give AI detailed instructions..."

But who is the "someone" in that sentence? And how did they get their expertise?

23.02.2026 11:37 👍 116 🔁 27 💬 5 📌 6
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Pay equity ‘select committee’ finds ‘flagrant and significant abuse of power’ A group of female former MPs subjected the pay equity overhaul to the scrutiny it should have received before passing into law. Their newly released report is damning.

When National, ACT, and NZ First gutted pay equity last year, they didn’t listen to the voices of women, workers, or experts. The People’s Select Committee was formed so that the voices of Aotearoa could be heard on pay equity - and their findings are damning for the National-led Govt. #nzpol

23.02.2026 21:26 👍 72 🔁 36 💬 2 📌 2