Jarno Virtanen
@jajvirta.bsky.social
Ops Engineer at the Finnish Broadcasting Company (Yleisradio). Content mostly about platform engineering, software development and related topics. Also hosts a podcast (in Finnish): Parempaa designia kaikille.
I need something like STAMP (Systems-Theoretic Accident Model and Processes) for my personal life.
November 4, 2025 at 8:52 PM
I need something like STAMP (Systems-Theoretic Accident Model and Processes) for my personal life.
I'm waiting for companies to roll out premium subscriptions that allow you to turn off AI features.
September 26, 2025 at 12:47 PM
I'm waiting for companies to roll out premium subscriptions that allow you to turn off AI features.
A discussion about the efficacy of social media posting on, say, Gaza or Ukraine reminds me about the late Aaron Swartz's post Theory of Change (www.aaronsw.com/weblog/theor...). Now, ending a war isn't something you "just do" by adopting the theory, but I think the framing still brings clarity.
Theory of Change (Aaron Swartz's Raw Thought)
www.aaronsw.com
July 29, 2025 at 5:38 PM
A discussion about the efficacy of social media posting on, say, Gaza or Ukraine reminds me about the late Aaron Swartz's post Theory of Change (www.aaronsw.com/weblog/theor...). Now, ending a war isn't something you "just do" by adopting the theory, but I think the framing still brings clarity.
"Powers' manuscript...is among the most exciting I have read in some time. The problems are of vast importance, and not only to psychologists; the achieved synthesis is thoroughly original and the presentation is often convincing and almost invariably suggestive. ..." -Thomas Kuhn
July 27, 2025 at 6:24 PM
"Powers' manuscript...is among the most exciting I have read in some time. The problems are of vast importance, and not only to psychologists; the achieved synthesis is thoroughly original and the presentation is often convincing and almost invariably suggestive. ..." -Thomas Kuhn
Maybe we should store a few easy-to-recharge jail-free smartphones so that we have something that we can use when in few years capitalism has ruined smartphones totally.
July 22, 2025 at 9:02 AM
Maybe we should store a few easy-to-recharge jail-free smartphones so that we have something that we can use when in few years capitalism has ruined smartphones totally.
I really enjoy watching Nima Arkani-Hamed's talks even though I don't understand anything about theoretical physics.
Example: www.youtube.com/watch?v=U47k...
Example: www.youtube.com/watch?v=U47k...
Nima Arkani-Hamed Public Lecture: Quantum Mechanics and Spacetime in the 21st Century
YouTube video by Perimeter Institute for Theoretical Physics
www.youtube.com
July 20, 2025 at 7:11 PM
I really enjoy watching Nima Arkani-Hamed's talks even though I don't understand anything about theoretical physics.
Example: www.youtube.com/watch?v=U47k...
Example: www.youtube.com/watch?v=U47k...
Reposted by Jarno Virtanen
Amazon Ring is introducing a new feature that would allow police to request live-stream access to people’s home security devices.
Helllll no. If you have one of those things, get rid of it. Kill it with fire
Helllll no. If you have one of those things, get rid of it. Kill it with fire
Amazon Ring Cashes in on Techno-Authoritarianism and Mass Surveillance
Ring founder Jamie Siminoff is back at the helm of the surveillance doorbell company, and with him is the surveillance-first-privacy-last approach that made Ring one of the most maligned tech devices....
www.eff.org
July 19, 2025 at 5:24 PM
Amazon Ring is introducing a new feature that would allow police to request live-stream access to people’s home security devices.
Helllll no. If you have one of those things, get rid of it. Kill it with fire
Helllll no. If you have one of those things, get rid of it. Kill it with fire
I underestimate the effect of learning new stuff to my overall motivation. When I get an itch to learn something, even trivial stuff, I notice myself switching from (relative) apathy into a mode that I can learn but also do other stuff with that sudden burst of motivation.
July 7, 2025 at 6:15 AM
I underestimate the effect of learning new stuff to my overall motivation. When I get an itch to learn something, even trivial stuff, I notice myself switching from (relative) apathy into a mode that I can learn but also do other stuff with that sudden burst of motivation.
I re-read The Inner Ring by C.S. Lewis every few years to remind myself that the yearning to be in some inner ring is what ruins our intentions to be a good human being.
www.lewissociety.org/innerring/
www.lewissociety.org/innerring/
The Inner Ring - CS Lewis Society of California
www.lewissociety.org
July 7, 2025 at 5:03 AM
I re-read The Inner Ring by C.S. Lewis every few years to remind myself that the yearning to be in some inner ring is what ruins our intentions to be a good human being.
www.lewissociety.org/innerring/
www.lewissociety.org/innerring/
Writing documentation is a good motivator to find out if your software actually does what you thought it did. Hint: it doesn't.
June 17, 2025 at 5:57 AM
Writing documentation is a good motivator to find out if your software actually does what you thought it did. Hint: it doesn't.
With apologies to Jens Rasmussen and Richard I. Cook, the story of our little close-call / near-miss incident and how I think it relates to eg. Rasmussen's model.
youtu.be/QIxUyrwyf6U?...
youtu.be/QIxUyrwyf6U?...
KCD Helsinki 2025 - Jarno Virtanen: Situation None of Your Applications Can Start New Pods, Now What
YouTube video by Cloud Native Nordics
youtu.be
June 8, 2025 at 7:00 AM
With apologies to Jens Rasmussen and Richard I. Cook, the story of our little close-call / near-miss incident and how I think it relates to eg. Rasmussen's model.
youtu.be/QIxUyrwyf6U?...
youtu.be/QIxUyrwyf6U?...
Maybe (one) secret to happiness of Finnish people is that we don't regard cold plunges and sauna as a way to improve some biomarkers (advocated by some wellness/tech bro) but as a way to just enjoy ourselves.
May 25, 2025 at 3:15 PM
Maybe (one) secret to happiness of Finnish people is that we don't regard cold plunges and sauna as a way to improve some biomarkers (advocated by some wellness/tech bro) but as a way to just enjoy ourselves.
Ivy League lectures tend to have introductions to introductions before the actual lecture and sometimes there's an introduction in the lecture too. Get a grip, people! I thought you had smarts up there.
May 17, 2025 at 4:02 PM
Ivy League lectures tend to have introductions to introductions before the actual lecture and sometimes there's an introduction in the lecture too. Get a grip, people! I thought you had smarts up there.
The problem is that the decisions that have the biggest impact are also the ones that you don't get feedback for. So you will never know for sure if the decision was right or wrong.
(Of course, there's also blatant lying, but that shouldn't be too much of a problem for any normal person.)
(Of course, there's also blatant lying, but that shouldn't be too much of a problem for any normal person.)
May 13, 2025 at 6:00 AM
The problem is that the decisions that have the biggest impact are also the ones that you don't get feedback for. So you will never know for sure if the decision was right or wrong.
(Of course, there's also blatant lying, but that shouldn't be too much of a problem for any normal person.)
(Of course, there's also blatant lying, but that shouldn't be too much of a problem for any normal person.)
Well at least Americans can't claim anymore that USA is the greatest democracy in the world.
May 7, 2025 at 5:00 PM
Well at least Americans can't claim anymore that USA is the greatest democracy in the world.
Reposted by Jarno Virtanen
🧵 THREAD: A federal whistleblower just dropped one of the most disturbing cybersecurity disclosures I’ve ever read.
He's saying DOGE came in, data went out, and Russians started attempting logins with new valid DOGE passwords
Media's coverage wasn't detailed enough so I dug into his testimony:
He's saying DOGE came in, data went out, and Russians started attempting logins with new valid DOGE passwords
Media's coverage wasn't detailed enough so I dug into his testimony:
April 18, 2025 at 12:10 AM
🧵 THREAD: A federal whistleblower just dropped one of the most disturbing cybersecurity disclosures I’ve ever read.
He's saying DOGE came in, data went out, and Russians started attempting logins with new valid DOGE passwords
Media's coverage wasn't detailed enough so I dug into his testimony:
He's saying DOGE came in, data went out, and Russians started attempting logins with new valid DOGE passwords
Media's coverage wasn't detailed enough so I dug into his testimony:
Clarification to all non-Finnish people: we Finns don't go to the sauna and to the hole in the ice ("avanto" in Finnish) in order to get some health benefits. We go to avanto and sauna because it feels good. Before, during and after.
March 28, 2025 at 6:34 AM
Clarification to all non-Finnish people: we Finns don't go to the sauna and to the hole in the ice ("avanto" in Finnish) in order to get some health benefits. We go to avanto and sauna because it feels good. Before, during and after.
I will be talking at KCD Helsinki about a sticky situation we were in when none of applications could start new Pods on our Kubernetes clusters. I'm so happy that people are organizing a KCD in Finland, for the first time. Thank you people!
sessionize.com/view/kn28rz7...
sessionize.com/view/kn28rz7...
Your site
sessionize.com
March 8, 2025 at 7:35 AM
I will be talking at KCD Helsinki about a sticky situation we were in when none of applications could start new Pods on our Kubernetes clusters. I'm so happy that people are organizing a KCD in Finland, for the first time. Thank you people!
sessionize.com/view/kn28rz7...
sessionize.com/view/kn28rz7...
Currently enjoying @guruspod.bsky.social podcast. Somewhat rambly but I think this is what it sounds like when you try to sincerely approach truth. A good example is how they deconstructed Huberman: I now have much better understanding what I found annoying and unsatisfying about Huberman's podcast.
January 24, 2025 at 2:35 PM
Currently enjoying @guruspod.bsky.social podcast. Somewhat rambly but I think this is what it sounds like when you try to sincerely approach truth. A good example is how they deconstructed Huberman: I now have much better understanding what I found annoying and unsatisfying about Huberman's podcast.
The most positive feedback you can get in workfile is from off-hand comments that weren't even meant too seriously.
January 18, 2025 at 7:56 AM
The most positive feedback you can get in workfile is from off-hand comments that weren't even meant too seriously.
Become 1% smarter every day until you become smart enough to realize that improving 1% at anything every day is impossible.
January 13, 2025 at 6:14 AM
Become 1% smarter every day until you become smart enough to realize that improving 1% at anything every day is impossible.
It is always a little bit difficult for me to handle when someone whose content you follow is associated with some genuine douchebag.
January 3, 2025 at 5:06 PM
It is always a little bit difficult for me to handle when someone whose content you follow is associated with some genuine douchebag.
Two predictive features of the iPhone that are NEVER right: the share link/image thingie and the suggested apps feature. They are astonishingly bad.
January 3, 2025 at 7:14 AM
Two predictive features of the iPhone that are NEVER right: the share link/image thingie and the suggested apps feature. They are astonishingly bad.
Reposted by Jarno Virtanen
You wake up. It’s 2013. Some language platform has chosen to use an insecure algorithm for its random() function, and HN is blaming the numerous security flaws that resulted from this decision on individual software developers. www.zellic.io/blog/proton-...
Far From Random: Three Mistakes From Dart/Flutter's Weak PRNG | Zellic — Research
A look into how an unexpectedly weak PRNG in Dart led to Zellic's discovery of multiple vulnerabilities
www.zellic.io
December 13, 2024 at 4:30 PM
You wake up. It’s 2013. Some language platform has chosen to use an insecure algorithm for its random() function, and HN is blaming the numerous security flaws that resulted from this decision on individual software developers. www.zellic.io/blog/proton-...