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Dai Vaughan

@daivaughan.uk

Geek. Cymru. Digital technology specialist. Consulting Practice CTO at Public Digital. Independent Member for Digital at Aneurin Bevan University Health Board. Co-founder of GDS. Views my own.

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03.07.2023
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Latest posts by Dai Vaughan @daivaughan.uk

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What's My JND? Find your Just Noticeable Difference in colour perception. How small a colour difference can you actually see?

What's My JND? 0.0039
Can you beat it? www.keithcirkel.co.uk/whats-my-jnd...

10.03.2026 22:21 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Civil Service Reform: The Chapter 10 Problem David French recently drew attention to what authors and editors sometimes call the β€˜Chapter 10 problem’.

Report after report recommends Civil Service Reform - but it never happens. Here's why:-
ukcivilservant.substack.com/p/civil-serv...
Includes references to writing by @andrewgreenway.bsky.social , @samfr.bsky.social & @iandunt.bsky.social

09.03.2026 17:38 πŸ‘ 6 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0
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She Came Out of the Bathroom Naked, Employee Says Bank details, sex and naked people who seem unaware they are being recorded. Behind Meta’s new smart glasses lies a hidden workforce, uneasy about peering into the most intimate parts of other people’...

The data from your Meta Ray Bans is used to train Meta's AI, which most people don't understand means that humans are looking at the most intimate details of their lives. www.svd.se/a/K8nrV4/met...

04.03.2026 06:47 πŸ‘ 406 πŸ” 262 πŸ’¬ 11 πŸ“Œ 25
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Silly Rules National Report - Bevan Commission

Nearly 800 people responded to a simple question from the Bevan Commission and Llais:

If you could break or change any rule to provide a better care experience in Wales, what would it be?

bevancommission.org/silly-rules-...

02.03.2026 09:03 πŸ‘ 4 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0
"Gwnewch y pethau bychain" - do the small things.
- Compounding impact
- Collective transformation

"Gwnewch y pethau bychain" - do the small things. - Compounding impact - Collective transformation

Happy St David’s Day.

He famously said: "Gwnewch y pethau bychain" - do the small things.

🌼 🏴󠁧󠁒󠁷󠁬󠁳󠁿

01.03.2026 09:31 πŸ‘ 5 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0
"Gwnewch y pethau bychain"
- Effaith sy'n cronni
- Trawsnewid ar y cyd

"Gwnewch y pethau bychain" - Effaith sy'n cronni - Trawsnewid ar y cyd

Dydd GΕ΅yl Dewi Sant Hapus.

β€œGwnewch y pethau bychain.”

🌼 🏴󠁧󠁒󠁷󠁬󠁳󠁿

01.03.2026 09:26 πŸ‘ 3 πŸ” 6 πŸ’¬ 1 πŸ“Œ 0

The first chapter on "a better government" is v. interesting...

"people centred", "open and transparent", "measurable outcomes", "test and learn"

Political parties don't often focus on ways of working/culture in government.

28.02.2026 10:17 πŸ‘ 6 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0

For those of us in early-GDS who kept track of the Chief Mousers, this is very sad news. I am however very glad Palmerston enjoyed their retirement in Bermuda.

13.02.2026 22:08 πŸ‘ 11 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Badly written consultation questions are a perfect invite for a judicial review. It’s amazing how often government forgets about the Gunning principles test.

12.02.2026 21:54 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Banner image with screenshot of scientific article from nature Medicine, as well as two panels from the study method and results

Banner image with screenshot of scientific article from nature Medicine, as well as two panels from the study method and results

⚠️ Despite all the hype, chatbots still make terrible doctors. Out today is the largest user study of language models for medical self-diagnosis. We found that chatbots provide inaccurate and inconsistent answers, and that people are better off using online searches or their own judgment.

09.02.2026 17:07 πŸ‘ 358 πŸ” 168 πŸ’¬ 7 πŸ“Œ 33

McSweeney. Starmer. Mandelson. Enough

Can we please re-centre and focus on what Epstein is about.

Justice for these women.

Stopping this shit so no more women, girls have to go through this again.

08.02.2026 19:02 πŸ‘ 38 πŸ” 14 πŸ’¬ 1 πŸ“Œ 1
Mae’r Prif Weinidog yn anghywir am gyflenwi technoleg yn y sector cyhoeddus Yr wythnos hon, cynhaliodd podlediad For Wales See Wales, gyfweliad ag Eluned Morgan, Prif Weinidog Cymru. Ynddo, mynegodd ei rhwystredigaeth ynghylch cyflymder y trawsnewid digidol yng Nghymru. Rydym...

Dywedodd y Prif Weinidog wrth @willhaycardiff.bsky.social ei bod yn anfodlon gyda chyflymder trawsnewid digidol. Rydyn ni hefyd.

Mae’r broblem yn systemig - mae gennym amgylchedd lle mae’n haws siarad am newid nag yw hi i’w gyflawni mewn gwirionedd.

Darllenwch ein hymateb, a sut i’w drwsio.

07.02.2026 10:05 πŸ‘ 5 πŸ” 5 πŸ’¬ 0 πŸ“Œ 0
Why the First Minister is wrong about public sector technology delivery This week the For Wales See Wales podcast interviewed Eluned Morgan, the First Minister of Wales. In it, she expressed her frustration at the speed of digital transformation in Wales. We agree. Howeve...

The FM told @willhaycardiff.bsky.social she's frustrated with the pace of digital transformation. We are too.

The problem is systemic - we have an environment where it is easier to talk about change than to actually do it.

Read our response, and how to fix it.

07.02.2026 10:05 πŸ‘ 10 πŸ” 9 πŸ’¬ 0 πŸ“Œ 2

Interestingly, I’ve noticed a few local stations missing/not showing. Both Shell garages. Looks like they *are* providing data though the scheme though.

www.shell.co.uk/fuel-prices-data.html

03.02.2026 21:31 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I've written a piece for the @econ-observatory.bsky.social on the history of GDS. Notably, why you need change both top down and bottom up incentives if you're aiming to help a large, federated organisation adopt radical change.

29.01.2026 13:46 πŸ‘ 24 πŸ” 15 πŸ’¬ 1 πŸ“Œ 0
The deep digital geology that’s slowing your company down β€” Public Digital

You can thank @daverog.bsky.social for that particular analogy:

public.digital/pd-insights/...

29.01.2026 10:31 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Newsletter #103 | Dafydd Vaughan I’m really excited to share what I’ve been working on for the last few months: a new book from Public Digital on shaping technology for transformation. πŸ“– Technology is a fundamental part of every or...

Find out more in the PD newsletter: www.linkedin.com/posts/dafydd...

And order a copy:
public.digital/pd-technolog...

28.01.2026 21:17 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

It’s a collection of essays from my colleagues, edited by me, on the culture and leadership conditions that make tech work. We dig into: digital sovereignty 🏰, tech spaghetti 🍝, leadership debt πŸ’Έ, knowing when to stop πŸ›‘ and weathering a crisis πŸ’₯.

28.01.2026 21:17 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Really excited to share a thing I've been working on: a new book from @publicdigital.bsky.social on shaping technology for transformation.

Tech is a fundamental part of every organisation - but they're often hamstrung by layers of digital geology, alongside huge pressure to chase the latest hype.

28.01.2026 21:17 πŸ‘ 23 πŸ” 6 πŸ’¬ 1 πŸ“Œ 2
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This is Literally the Job Political journalists need to stop pretending they don't know what Republicans are going to do.

"They told us what they were going to do. They published it. They put it on a website. And when it happened, the press was surprised."

Hoo boy, everyone should bookmark this @parkermolloy.com piece & make sure everyone involved in media reads it.

27.01.2026 21:37 πŸ‘ 1741 πŸ” 654 πŸ’¬ 42 πŸ“Œ 62

It’s part of France’s open source collaboration software suite that other governments can adopt and run.

26.01.2026 07:06 πŸ‘ 14 πŸ” 9 πŸ’¬ 1 πŸ“Œ 1

Three errors here. First, in confusing some kind of SEND classification (20%) with EHCPs (5.5%).

Secondly in assuming it gives automatic right to DLA. Though there is a strong ECHP/DLA overlap.

Third in assuming that those moving to DLA to PIP never work (it's not an out of work benefit).

24.01.2026 08:51 πŸ‘ 382 πŸ” 165 πŸ’¬ 27 πŸ“Œ 3

The insanity of UK public bodies threatening other UK public bodies with the apparent intention of limiting the reuse of UK address data. Meanwhile the rest of the world has long recognised that postal address data is critical digital public infrastructure in the 21st century.

23.01.2026 17:07 πŸ‘ 56 πŸ” 34 πŸ’¬ 5 πŸ“Œ 2

If you - like me - are totally baffled by the complete incoherence of the Labour Party’s positioning ahead of #Senedd26, this thread from RWJ shines a bit of light on the already glaring inconsistencies in the FM’s speech on Labour’s constitutional aims for the futurenof #Wales. πŸ΄σ §σ ’σ ·σ ¬σ ³σ ΏπŸ‘‡πŸ‘‡

22.01.2026 22:07 πŸ‘ 7 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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#FWD50

20.01.2026 15:20 πŸ‘ 7 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

For reasons I can’t remember, it didn’t really work, and content designers didn’t take to it, so it got retired. But very cool something similar is now live and working.

20.01.2026 20:19 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Commits Β· alphagov/fact-cave A single source of small, regularly changing, information that is used in multiple places. - Commits Β· alphagov/fact-cave

Ah! I was just searching for this, but couldn’t remember what it was called. The team prototyped this back in 2013. github.com/alphagov/fac...

20.01.2026 20:17 πŸ‘ 4 πŸ” 1 πŸ’¬ 3 πŸ“Œ 0
Mark working on his laptop at a mySociety retreat. Behind him, an upright piano is festooned with coloured Post-It notes.

Mark working on his laptop at a mySociety retreat. Behind him, an upright piano is festooned with coloured Post-It notes.

In tribute to Mark Longair: www.mysociety.org/2026/01/15/a...

15.01.2026 16:30 πŸ‘ 16 πŸ” 16 πŸ’¬ 1 πŸ“Œ 4

πŸ‘€

13.01.2026 18:15 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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How to afford the state we want State effectiveness and state capacity are not the same thing

Yes: we spent unfathomable millions on a bridge to nowhere because process forced us to. But we also spent Β£100m on an unusable prison because of recklessness about process. State capacity is not a problem that bold leadership will magically resolve.

open.substack.com/pub/howtorun...

11.01.2026 07:31 πŸ‘ 24 πŸ” 7 πŸ’¬ 2 πŸ“Œ 3