Dai Vaughan
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daivaughan.uk
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.
I’m finding Gemini pro 2.5 works a lot better than ChatGPT, Claude or even Gemini flash for the types of tasks I’m using it for. Even more so when I use a gem that’s got decent context preloaded.
November 18, 2025 at 11:17 PM
Many times I’ve had to say “no. This isn’t what I want at all” and then reframed the prompt. Then gotten frustrated that it still isn’t getting it right. And then walked away. It’s… temperamental.
November 18, 2025 at 11:07 PM
I’ve got a “drafter” persona (a Gem) that helps me develop a first version of something, then a separate “challenger” persona that helps me edit things. I’m finding them quite useful, but as always, they’re tools to help, with limitations. I still have to do the legwork.
November 18, 2025 at 10:40 PM
It’s taken me while to figure out the right prompts to get Gemini to use my tone of voice / style in a way I’m happy with. Still lots of trial and error involved. Mostly using it to help turn thoughts into something coherent, and as a first draft only. Then I have a tool that helps me edit stuff
November 18, 2025 at 10:37 PM
Situation pretty bad in Abergavenny. Mostly major surface water flooding rather than rivers. Local Facebook has been frantic all evening. Admins have turned off posts/comments on main group now for the night. Very little coverage from journalists, and what is reported is mostly taken from Facebook
November 14, 2025 at 11:31 PM
At @publicdigital.bsky.social my colleague @robmiller31.bsky.social has a saying: “you can’t be safe, only safer”

Being safer, and more resilient, means changing how leadership approaches technology delivery. Whether that’s for cyber security. Or tech failure.

More here: public.digital/cyber
A cyber approach which goes beyond defending existing technology — Public Digital
public.digital
October 23, 2025 at 8:45 AM
In this article I make the case that leadership’s responsibility is to shift the mindset from prevention, to focussing on resilience.

The most important question for a CIO/CTO is no longer, ‘Have we stopped all bad things from happening?’ but ‘When a bad thing happens, how quickly can we recover?’
October 23, 2025 at 8:35 AM
We’ve seen many of these incidents over the last year - from the Crowdstrike failure last summer, the recent attacks against TfL, M&S, Co-op, to the ongoing impacts supply chains following the cyber attack on JLR.

These have a knock on impact to businesses and public services around the world. /2
October 23, 2025 at 8:35 AM
Which is great until you realise how reliant other AWS regions are on us-east-1
October 20, 2025 at 9:09 AM
:( poor Bruce. Sending hugs for him.
October 15, 2025 at 9:31 PM