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Pelayo Arbués

@pelayoarbues.com

Head of Data Science and AI at idealista.com | Film photographer | Ph.D. in Economics | Sharing my digital garden at pelayoarbues.com | Working full remote from the North of Spain

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Latest posts by Pelayo Arbués @pelayoarbues.com

#StarterPack #Saturday
@pelayoarbues.com put it all the way together right here! If you are like #MissKitty pulling levers with #AI #Research, then you want this. If you want to get your two cents in. That is there. Come on and get a #FollowAll and #Repost and listen in or tell it all!

31.01.2026 17:56 👍 1 🔁 2 💬 0 📌 0
idealista map showing the new feature

idealista map showing the new feature

When you search for a home, it’s rarely “the whole city.”
It’s more like: this neighborhood yes, this one no, that other one too, even if it’s far away. With @idealista.bsky.social new multi-area search, you can mix, exclude and add zones in one map search.

29.01.2026 13:52 👍 2 🔁 0 💬 0 📌 0
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I am calling for a complete and total boycott of the Mercator projection in all news stories about Greenland until every member of the American public has seen this

13.01.2026 17:32 👍 4230 🔁 1525 💬 99 📌 142
2025 Reading Wrapped In 2025 I kept the pace of reading before bed.

The books I read in 2025. I followed the same habit that worked so well in 2024: reading non-fiction first to satisfy my curiosity and then switching to fiction to wind down. This routine is still the best compromise I’ve found between learning and resting. www.pelayoarbues.com/notes/Wrappe...

14.01.2026 18:49 👍 2 🔁 0 💬 0 📌 0

Thanks Sebastien

12.01.2026 15:25 👍 0 🔁 0 💬 0 📌 0

Any good starter guide?

11.01.2026 21:03 👍 1 🔁 0 💬 1 📌 0
Self-proclaimed experts Allergic. I’m allergic to self-proclaimed experts. For me, it’s a red flag.

I declare myself allergic to self-proclaimed experts. www.pelayoarbues.com/notes/Self-p...

18.11.2025 13:44 👍 1 🔁 0 💬 0 📌 0
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Center for the Alignment of AI Alignment Centers We align the aligners

Once again I really, really needed this for a better Friday!

It is more relevant and hilarious every time I visit.

alignmentalignment.ai

24.10.2025 20:52 👍 4 🔁 1 💬 0 📌 0
Photography of the book Tres Millones de viviendas displayed on top of orange bricks

Photography of the book Tres Millones de viviendas displayed on top of orange bricks

Just finished reading 3 Millones de Viviendas by @jorgegalindo.bsky.social. One of the sharpest takes on Spain’s housing crisis I’ve seen. Data, history, and a tough question: what kind of country do we want to build? www.pelayoarbues.com/notes/Tres-M... #realestate

08.10.2025 18:54 👍 4 🔁 0 💬 0 📌 0
I think “agent” may finally have a widely enough agreed upon definition to be useful jargon now I’ve noticed something interesting over the past few weeks: I’ve started using the term “agent” in conversations where I don’t feel the need to then define it, roll my eyes …

I'm ready to accept a definition of "agent" that I think is widely-enough agreed upon to be useful, at least in the AI engineering space:

An LLM agent runs tools in a loop to achieve a goal

(I've been dismissing the term as hopelessly ambiguous for years) simonwillison.net/2025/Sep/18/...

18.09.2025 19:15 👍 130 🔁 18 💬 8 📌 3
A text editor in baroque style, created using magnific.ai

A text editor in baroque style, created using magnific.ai

Context engineering is the new AI buzzword. And here we go again: www.pelayoarbues.com/notes/Contex...

23.09.2025 08:41 👍 2 🔁 0 💬 1 📌 0

The data industry promotes builders.
Not leaders.

You nailed pipelines.
So they gave you politics.

Now you're managing people, budgets, and roadmaps.
With zero training.

You’re not unqualified.
You’re just undertrained.

24.07.2025 12:02 👍 3 🔁 1 💬 0 📌 0
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If you load this page it contacts 82 IP addresses executing 256 separate HTTP transactions to download 18MB of data writing 64 cookies to your device to tell you “no”

24.05.2025 10:37 👍 14968 🔁 4471 💬 147 📌 241
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Jules - An Asynchronous Coding Agent Jules is an asynchronous agent that gets out of your way. It lets you focus on the coding you want to do, meawnwhile picking up all the other random tasks that you rather not do.

OpenAI announced Codex (openai.com/index/introd...) on May 16, 2025 for their $200/month Pro users, and Google announced a competing tool called Jules (jules.google) on May 20, 2025 making it available for FREE.

There’s no moat in AI—how can a moat disappear in less than a week?

21.05.2025 04:44 👍 16 🔁 5 💬 1 📌 1
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Veo 3: "a big broadway musical about garlic bread, with elaborate costumes and a sondheim-like vibe"

21.05.2025 05:46 👍 76 🔁 13 💬 6 📌 14
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Every AI coding tools company doing demos with React + Typescript (and maybe React Native.)

Microsoft meanwhile showing off Java and .NET case studies.

This doesn’t look like an accident - but a very deliberate strategy.

It’s easier to win when you are on a ground with fewer competitors…

20.05.2025 16:21 👍 51 🔁 6 💬 6 📌 3
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VEO 3

Prompt: Generate a TV news anchor with a British accent, the anchor says "in shocking news, Jake Kaye Rowe ling's yacht sank with her on board after being attacked by orcas off the coast of turkey" include the announcement in the dialogue.

This took one prompt and 2 minutes to generate.

21.05.2025 02:26 👍 2200 🔁 504 💬 145 📌 347
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500 days reviewing highlights on @readwise.bsky.social!!!

20.05.2025 20:17 👍 5 🔁 1 💬 2 📌 0
A digital landscape showing gradient descent

A digital landscape showing gradient descent

I just shared a learning path guide for software developers looking to infuse AI into their products, tailored specifically to your needs, interests, and how deep you'd like to dive.
www.pelayoarbues.com/notes/AI-Lea...

20.05.2025 19:49 👍 2 🔁 0 💬 0 📌 0
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Goodhart's Law Isn't as Useful as You Might Think Goodhart's Law is useless. It tells you about a phenomenon, but it doesn't tell you how to solve it. We look at how organisations actually prevent Goodhart's Law, and illustrate this with Amazon's Wee...

When people are pressured to meet a target value there are three ways they can proceed:

1) They can work to improve the system
2) They can distort the system
3) Or they can distort the data

— Donald Wheeler

commoncog.com/goodharts-la...

14.05.2025 18:15 👍 3 🔁 1 💬 0 📌 0
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I don't know why people think picking a model on ChatGPT is so complicated.

14.05.2025 01:36 👍 164 🔁 17 💬 12 📌 2
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luokai (@luokai) on Threads SmolVLM real-time camera is a framework for running computer vision models locally on M3 MacBooks. It combines HTML webcam access with llama.cpp's inference process to enable real-time image capture, ...

SmolVLM real-time camera is a framework for running computer vision models locally on M3 MacBooks. It combines HTML webcam access with llama.cpp's inference process to enable real-time image capture, understanding, and captioning.

www.threads.com/@luokai/post...

13.05.2025 15:10 👍 4 🔁 1 💬 1 📌 0

It is a little weird to me countries aren’t more aggressively, formally trying to take advantage of the U.S. science brain drain. Once in a lifetime opportunity to buy low on Non-Dumbass Americans with PhDs who just wanna look into microscopes and quietly cure ass cancer as our country eats shit.

04.05.2025 20:54 👍 34838 🔁 4821 💬 1236 📌 421

Joer juraría que había visto un mcp tool para marimo hace un par de días. Espero no haberlo soñado, porque vaya sueño más triste 😅

04.05.2025 11:28 👍 1 🔁 0 💬 0 📌 0
Área de Aplicación – Muestrear no es pecado On this page

Nuevo post. Área de aplicación. Cosas curiosas que he leído este finde y que me parecen interesantes. Reproduzco parte de un post de Jakub Nowosad
muestrear-no-es-pecado.es/2025/05/aoa

04.05.2025 10:10 👍 1 🔁 2 💬 0 📌 0

Ellos pensaban que el gimnasio era un centro de ocio. En realidad es un centro de odio.

01.05.2025 11:41 👍 1 🔁 0 💬 0 📌 0
Power and Prediction I have recently finished reading Power and Prediction.

Just finished 'Power and Prediction'. Loved the economic take: AI dramatically reduces prediction costs but leaves human judgment scarce. Also, great analogy with electricity, real AI impact requires systemic change www.pelayoarbues.com/notes/Power-...

30.04.2025 22:11 👍 0 🔁 0 💬 0 📌 0
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Spain's power is slowly coming back, but situation still far from normal. Out of the 33 GW scheduled for this evening peak, only 18 GW is available. Nuclear and coal-fired power plants still offline.

28.04.2025 19:24 👍 92 🔁 26 💬 2 📌 4
Evolution from character to person. When we don’t know someone well, we tend to project intentions onto them, casting them as a character in a play they themselves are unaware exists. It’s quite challenging to optimize on behalf of characters in your mental play, but it’s much easier to be understanding of people you know personally. Spending time together learning about each other, often at a team offsite, will slowly transform strangers into people.

Evolution from character to person. When we don’t know someone well, we tend to project intentions onto them, casting them as a character in a play they themselves are unaware exists. It’s quite challenging to optimize on behalf of characters in your mental play, but it’s much easier to be understanding of people you know personally. Spending time together learning about each other, often at a team offsite, will slowly transform strangers into people.

When we don’t know someone well, we tend to project intentions onto them, casting them as a character in a play they themselves are unaware exists.

12.04.2025 19:17 👍 4 🔁 0 💬 0 📌 0
AI generated image of a bridge linking two lands

AI generated image of a bridge linking two lands

Why software engineers should learn a bit of data science www.pelayoarbues.com/notes/Why-So... #databs

01.04.2025 19:52 👍 3 🔁 0 💬 0 📌 0