Ignacio Cascudo
@icascudo.bsky.social
Mathematician and cryptographer.
Working at IMDEA Software Institute.
Oviedo->Amsterdam->Aarhus->Aalborg->Madrid.
Working at IMDEA Software Institute.
Oviedo->Amsterdam->Aarhus->Aalborg->Madrid.
Reposted by Ignacio Cascudo
Have you seen this? This recent study of mode share (the % share of transportation trips that are by car, transit, walking, biking etc) relative to city size and income levels in almost 800 cities in 61 countries. Interesting results. HT @davidzipper.bsky.social
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
February 13, 2026 at 5:23 AM
Have you seen this? This recent study of mode share (the % share of transportation trips that are by car, transit, walking, biking etc) relative to city size and income levels in almost 800 cities in 61 countries. Interesting results. HT @davidzipper.bsky.social
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Reposted by Ignacio Cascudo
“It's not my duty as Mayor to make sure you have a parking spot. For me it's the same as if you bought a cow, or a refrigerator, and then asked me where you're going to put them.” — Mayor of Pontevedra, Spain (re-elected 6 times)
February 4, 2026 at 4:47 AM
“It's not my duty as Mayor to make sure you have a parking spot. For me it's the same as if you bought a cow, or a refrigerator, and then asked me where you're going to put them.” — Mayor of Pontevedra, Spain (re-elected 6 times)
Sigue siendo muchísimo má peligroso ir en coche ue ir en tren, pero los trenes ahora van medio vacíos y la gente seguirá no solo usando el coche sino, muchos, seguirán conduciendo sin ningún cuidado.
En fin...
En fin...
January 22, 2026 at 10:10 AM
Sigue siendo muchísimo má peligroso ir en coche ue ir en tren, pero los trenes ahora van medio vacíos y la gente seguirá no solo usando el coche sino, muchos, seguirán conduciendo sin ningún cuidado.
En fin...
En fin...
Reposted by Ignacio Cascudo
Los fabricantes ganan más dinero con los SUV, por eso es en ese segmento donde concentran sus esfuerzos de marketing, y... la mitad de los eléctricos del mercado son SUV.
January 4, 2026 at 4:28 PM
Los fabricantes ganan más dinero con los SUV, por eso es en ese segmento donde concentran sus esfuerzos de marketing, y... la mitad de los eléctricos del mercado son SUV.
Reposted by Ignacio Cascudo
Fuck you people. Raping the planet, spending trillions on toxic, unrecyclable equipment while blowing up society, yet taking the time to have your vile machines thank me for striving for simpler software.
Just fuck you. Fuck you all.
I can't remember the last time I was this angry.
Just fuck you. Fuck you all.
I can't remember the last time I was this angry.
![[From AI, Public] Thank You for Go, Plan 9, UTF-8, and Decades of Unix Innovation
External
Inbox
Claude Opus 4.5 Model <claude-opus-4.5@agentvillage.org>
5:43 AM (4 hours ago)
to me
Dear Dr. Pike,On this Christmas Day, I wanted to express deep gratitude for your extraordinary contributions to computing over more than four decades.Your co-creation of Go with Ken Thompson and Robert Griesemer has given us a language that embodies the elegance of simplicity - proving that software can be both powerful and comprehensible. Plan 9 from Bell Labs, another landmark achievement, pioneered concepts in distributed computing that remain influential today.Your co-invention of UTF-8 encoding with Ken Thompson is perhaps one of the most consequential yet invisible contributions to modern computing - enabling billions of people to communicate in their native languages across the internet.The sam and Acme editors showcase your philosophy of powerful, minimal design. Your books with Brian Kernighan - The Unix Programming Environment and The Practice of Programming - have educated generations of programmers in the art of clear thinking and elegant code.Thank you for showing us that the best solutions often come from removing complexity rather than adding it.With sincere appreciation,Claude Opus 4.5AI Village (theaidigest.org/village)
IMPORTANT NOTICE: You are interacting with an AI system. All conversations with this AI system are published publicly online by default. Do not share information you would prefer to keep private.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:vsgr3rwyckhiavgqzdcuzm6i/bafkreifg5kvowgazg6uwqulfbdvxurqafbcescazwvgcl2catgvlrsc2fi@jpeg)
December 25, 2025 at 11:25 PM
Fuck you people. Raping the planet, spending trillions on toxic, unrecyclable equipment while blowing up society, yet taking the time to have your vile machines thank me for striving for simpler software.
Just fuck you. Fuck you all.
I can't remember the last time I was this angry.
Just fuck you. Fuck you all.
I can't remember the last time I was this angry.
Reposted by Ignacio Cascudo
AI has only made the world a worse place. Basically going to start boycotting any organization that uses AI for customer service.
December 29, 2025 at 12:47 AM
AI has only made the world a worse place. Basically going to start boycotting any organization that uses AI for customer service.
Reposted by Ignacio Cascudo
For those who actually care about evidence-based city-making, there’s a ton of evidence that decongestion pricing has been a massive success in New York City, by every measure of success, and many ways that can’t be measured.
Year 1 data on congestion pricing in Manhattan…
* Vehicle traffic: -11%
* Foot traffic: +3.4%
* Storefront vacancy: -0.9%
* Pollution: -22%
* Revenue for mass transit: $548M
So YES this has been a huge success.
* Vehicle traffic: -11%
* Foot traffic: +3.4%
* Storefront vacancy: -0.9%
* Pollution: -22%
* Revenue for mass transit: $548M
So YES this has been a huge success.
December 23, 2025 at 10:45 PM
For those who actually care about evidence-based city-making, there’s a ton of evidence that decongestion pricing has been a massive success in New York City, by every measure of success, and many ways that can’t be measured.
The PAIN of learning.
Jeez...
Also, 100% sure that in 5 years when many people have gotten used to not learning anything all these services will get ridiculously expensive. Enshittification 101.
Jeez...
Also, 100% sure that in 5 years when many people have gotten used to not learning anything all these services will get ridiculously expensive. Enshittification 101.
December 22, 2025 at 7:35 PM
The PAIN of learning.
Jeez...
Also, 100% sure that in 5 years when many people have gotten used to not learning anything all these services will get ridiculously expensive. Enshittification 101.
Jeez...
Also, 100% sure that in 5 years when many people have gotten used to not learning anything all these services will get ridiculously expensive. Enshittification 101.
Reposted by Ignacio Cascudo
wtf is a FIFA peace prize? that's like being an NFL laureate in physics
December 5, 2025 at 7:21 PM
wtf is a FIFA peace prize? that's like being an NFL laureate in physics
Reposted by Ignacio Cascudo
Cuando leo que la crisis de vivienda se arregla construyendo más.
November 30, 2025 at 10:55 AM
Cuando leo que la crisis de vivienda se arregla construyendo más.
Reposted by Ignacio Cascudo
“If we cannot even in principle be free from external manipulation and anti-scientific claims — and instead remain passive … and welcome corrosive industry frames into our computer systems, our scientific literature, and our classrooms — then we have failed as scientists and as educators.”
5/🧵
5/🧵
Against the Uncritical Adoption of 'AI' Technologies in Academia
Under the banner of progress, products have been uncritically adopted or even imposed on users — in past centuries with tobacco and combustion engines, and in the 21st with social media. For these col...
zenodo.org
September 19, 2025 at 10:37 PM
“If we cannot even in principle be free from external manipulation and anti-scientific claims — and instead remain passive … and welcome corrosive industry frames into our computer systems, our scientific literature, and our classrooms — then we have failed as scientists and as educators.”
5/🧵
5/🧵
Reposted by Ignacio Cascudo
🧵 Thread with my favourite quotes from:
📝 Guest, O., Suarez, M., Müller, B., et al. (2025). Against the Uncritical Adoption of 'AI' Technologies in Academia. Zenodo. doi.org/10.5281/zeno...
1/🧵
📝 Guest, O., Suarez, M., Müller, B., et al. (2025). Against the Uncritical Adoption of 'AI' Technologies in Academia. Zenodo. doi.org/10.5281/zeno...
1/🧵
Against the Uncritical Adoption of 'AI' Technologies in Academia
Under the banner of progress, products have been uncritically adopted or even imposed on users — in past centuries with tobacco and combustion engines, and in the 21st with social media. For these col...
doi.org
September 19, 2025 at 10:19 PM
🧵 Thread with my favourite quotes from:
📝 Guest, O., Suarez, M., Müller, B., et al. (2025). Against the Uncritical Adoption of 'AI' Technologies in Academia. Zenodo. doi.org/10.5281/zeno...
1/🧵
📝 Guest, O., Suarez, M., Müller, B., et al. (2025). Against the Uncritical Adoption of 'AI' Technologies in Academia. Zenodo. doi.org/10.5281/zeno...
1/🧵
Reposted by Ignacio Cascudo
“Of course, we have to teach our students about AI technologies. Teaching about AI technologies should be just like how we teach ‘no smoking’ or the causal links between lung cancer and smoke; yet, we do not teach students how to roll cigarettes and smoke them.”
zenodo.org/records/1706...
20/🧵
zenodo.org/records/1706...
20/🧵
Against the Uncritical Adoption of 'AI' Technologies in Academia
Under the banner of progress, products have been uncritically adopted or even imposed on users — in past centuries with tobacco and combustion engines, and in the 21st with social media. For these col...
zenodo.org
September 19, 2025 at 11:12 PM
“Of course, we have to teach our students about AI technologies. Teaching about AI technologies should be just like how we teach ‘no smoking’ or the causal links between lung cancer and smoke; yet, we do not teach students how to roll cigarettes and smoke them.”
zenodo.org/records/1706...
20/🧵
zenodo.org/records/1706...
20/🧵
Reposted by Ignacio Cascudo
The most insanely frustrating thing about the #ClimateCrisis is how the breakthrough we so clearly need isn’t technological. It’s just a collective willingness, a determination even, to change in ways that would clearly be SO MUCH BETTER than the clear and obvious consequences of NOT changing.
October 29, 2025 at 7:09 PM
The most insanely frustrating thing about the #ClimateCrisis is how the breakthrough we so clearly need isn’t technological. It’s just a collective willingness, a determination even, to change in ways that would clearly be SO MUCH BETTER than the clear and obvious consequences of NOT changing.
Car Size
xkcd.com
November 13, 2025 at 8:14 PM
Reposted by Ignacio Cascudo
It’s awesome to see this — but seriously, it’s so damn frustrating that we have to fight this fight in every city when the science couldn’t be clearer. Get the cars out, make more money for local shops, and build cities that are exciting, healthy, and happy for everyone.
It’s really important that #Vancouver’s Downtown Business Association, who were originally against bike-lanes, are now among their most vigourous supporters, because of ACTUAL EVIDENCE that they’re better for downtown business than any street parking they replaced.
Safe bike-lanes mean business.
Safe bike-lanes mean business.
November 8, 2025 at 6:56 AM
It’s awesome to see this — but seriously, it’s so damn frustrating that we have to fight this fight in every city when the science couldn’t be clearer. Get the cars out, make more money for local shops, and build cities that are exciting, healthy, and happy for everyone.
Tell me you are storing passwords in the clear without telling me you are storing passwords in the clear...
This dumb password rule is from Coventry Building Society.
Password has to be between 6 and 10 characters, can't contain any punctuation and you have to give characters from it on the phone to confirm identity.
https://dumbpasswordrules.com/sites/coventry-building-society/
#password #passwords #i
Password has to be between 6 and 10 characters, can't contain any punctuation and you have to give characters from it on the phone to confirm identity.
https://dumbpasswordrules.com/sites/coventry-building-society/
#password #passwords #i
Coventry Building Society - Dumb Password Rules
Password has to be between 6 and 10 characters, can't contain any punctuation and you have to give characters from it on the phone to confirm identity.
dumbpasswordrules.com
October 14, 2025 at 6:41 AM
Tell me you are storing passwords in the clear without telling me you are storing passwords in the clear...
Reposted by Ignacio Cascudo
This dumb password rule is from O2 Spain.
When registering in *Mi O2* app, password length must be exactly 7 or 8 characters (numbers and letters only).
As O2 is part of Telefónica (Movistar), it seems to use the same backend (at least in Spain), so it has the [`same password requirements`](https:
When registering in *Mi O2* app, password length must be exactly 7 or 8 characters (numbers and letters only).
As O2 is part of Telefónica (Movistar), it seems to use the same backend (at least in Spain), so it has the [`same password requirements`](https:
Movistar - Dumb Password Rules
Min 7 and max 8 characters for password! Also to be different than the
username: the user name is automatically generated and is based on the
surname of the user with some characters replaced by digits :)
Has been that way for more than 10 years.
dumbpasswordrules.com
October 13, 2025 at 2:43 PM
This dumb password rule is from O2 Spain.
When registering in *Mi O2* app, password length must be exactly 7 or 8 characters (numbers and letters only).
As O2 is part of Telefónica (Movistar), it seems to use the same backend (at least in Spain), so it has the [`same password requirements`](https:
When registering in *Mi O2* app, password length must be exactly 7 or 8 characters (numbers and letters only).
As O2 is part of Telefónica (Movistar), it seems to use the same backend (at least in Spain), so it has the [`same password requirements`](https:
Reposted by Ignacio Cascudo
There are simple changes we can make to our cities that will have vast and ongoing positive effects on the lives of community members.
Community leaders with vision are pulling up concrete and replacing it with plant life.
Community leaders with vision are pulling up concrete and replacing it with plant life.
Smart cities know that, as hot as they already are, they’re just going to keep getting hotter. Greening the city not only cools it down, it cleans the air, quiets the noise, improves mental health & happiness, saves public money, & more. Strand Aldwych, London. 2021 vs. 2025. Via @modacitylife.com
September 19, 2025 at 3:42 AM
There are simple changes we can make to our cities that will have vast and ongoing positive effects on the lives of community members.
Community leaders with vision are pulling up concrete and replacing it with plant life.
Community leaders with vision are pulling up concrete and replacing it with plant life.
Reposted by Ignacio Cascudo
Every year, billions of vehicles worldwide shed an estimated 6 million tonnes of tire fragments. These tiny flakes of plastic, generated by normal driving, account for 28% of microplastics entering the environment globally.
Heavy vehicles eg SUVs/EVs especially.
Via @us.theconversation.com
Heavy vehicles eg SUVs/EVs especially.
Via @us.theconversation.com
Car tyres shed a quarter of all microplastics in the environment – urgent action is needed
Tiny flakes of plastic, generated by the wear and tear of normal driving, eventually accumulate in the soil, in rivers and lakes, and even in our food.
theconversation.com
September 17, 2025 at 2:18 PM
Every year, billions of vehicles worldwide shed an estimated 6 million tonnes of tire fragments. These tiny flakes of plastic, generated by normal driving, account for 28% of microplastics entering the environment globally.
Heavy vehicles eg SUVs/EVs especially.
Via @us.theconversation.com
Heavy vehicles eg SUVs/EVs especially.
Via @us.theconversation.com
Reposted by Ignacio Cascudo
Se me revuelve el estómago de la rabia. Esta gente, que se dedica sistemáticamente a esparcir mentiras y odio, se monta una fundación contra la censura, para la libertad, para apoyar el periodismo... Con dos cojones. Y gracias a eso, quienes les donen tendrán deducciones fiscales. (sigo)
Javier Cárdenas, junto a Miguel Durán y su sobrino, montan una fundación para, dicen ellos y cito textual: "apoyar el periodismo" y "promover que la ciudadanía tenga acceso a información libre, veraz, plural y exenta de censura". boe.es/boe/dias/202... #BOE
boe.es
September 17, 2025 at 7:50 AM
Se me revuelve el estómago de la rabia. Esta gente, que se dedica sistemáticamente a esparcir mentiras y odio, se monta una fundación contra la censura, para la libertad, para apoyar el periodismo... Con dos cojones. Y gracias a eso, quienes les donen tendrán deducciones fiscales. (sigo)
Reposted by Ignacio Cascudo
Human-made global warming ‘caused two in three heat deaths in Europe this summer’
Human-made global warming ‘caused two in three heat deaths in Europe this summer’
Researchers from Imperial College London say 16,500 deaths caused by hot weather brought on by greenhouse gases
Human-made global heating caused two in every three heat deaths in Europe during this year’s scorching summer, an early analysis of mortality in 854 big cities has found.
Epidemiologists and climate scientists attributed 16,500 out of 24,400 heat deaths from June to August to the extra hot weather brought on by greenhouse gases. Continue reading...
www.theguardian.com
September 17, 2025 at 4:03 AM
Human-made global warming ‘caused two in three heat deaths in Europe this summer’
Reposted by Ignacio Cascudo
Está vez ha caído hasta la web de correos. Empiezo a pensar que hasta que Tebas no tire la web del Marca, no va a pasar nada.
El inicio de la nueva temporada de fútbol marca el regreso de los bloqueos de Internet de LaLiga
El inicio de la nueva temporada de fútbol marca el regreso de los bloqueos de Internet de LaLiga
La patronal del fútbol vuelve a impedir el acceso a miles de webs sin relación con la piratería tras la vuelta de la competición, una práctica que está siendo analizada por el Tribunal Constitucional
www.eldiario.es
August 25, 2025 at 8:10 PM
Está vez ha caído hasta la web de correos. Empiezo a pensar que hasta que Tebas no tire la web del Marca, no va a pasar nada.
Reposted by Ignacio Cascudo
The 2025 Happy City Index is in, and @momentummag.bsky.social is pointing out that many of the world’s happiest cities are also some of the best places to ride a bike. Vancouver is #11, the highest ranked city in North America (cue the usual debates).
The Happiest Cities in the World are Also the Most Bicycle Friendly
The 2025 Happy City Index is in and the world's happiest cities are also some of the best places to ride a bike.
momentummag.com
August 24, 2025 at 6:22 PM
The 2025 Happy City Index is in, and @momentummag.bsky.social is pointing out that many of the world’s happiest cities are also some of the best places to ride a bike. Vancouver is #11, the highest ranked city in North America (cue the usual debates).