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Jez Humble

@jezhumble.net
3.8K followers 121 following 54 posts

Works on my machine! Author of some books on software, MTS @ Anthropic, portfolio @ continuousdelivery.com. Previously lecturer @ UC Berkeley, 18F, ThoughtWorks, Google. All tweets fictional. He / him. Ⓥ

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Jez Humble @jezhumble.net · 05/08/2026
My wife’s bookstore opens this Saturday 8th in El Cerrito, CA! It is going to be epic. All welcome! Please share!
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Jez Humble @jezhumble.net · 24/02/2026
speakerdeck.com/jezhumble/co...
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Jez Humble @jezhumble.net · 21/02/2026
Her story is also super inspiring www.theguardian.com/sport/2026/f...
theguardian.com
Alysa Liu released the pressure, reclaimed her joy and turned it into Olympic gold | Bryan Armen Graham
After stepping away from figure skating, the US star climbed back on her own terms. Her journey culminated in a medal, but it was about much more than that
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Jez Humble @jezhumble.net · 21/02/2026
2026 Olympic Gold figure skater Alysa Liu's work is so beautiful and joyful, take some time out of your day and watch this performance from the 2026 US figure skating championships: youtube.com/watch?v=9PTq.... What an absolute legend (and East Bay hero!)
youtube.com
Alysa Liu "Promise" 2026 U.S. Figure Skating Championships MUSIC ONLY NO COMMENTARY
YouTube video by january park
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Jez Humble @jezhumble.net · 19/10/2025
Two precepts from an interview with Alan Garner: d.lib.rochester.edu/camelot/text...
 This I got from my grandfather. He was a craftsman, and he gave me two precepts which as a writer I've not been able to get away from. One was always take as long as the job tells you to take, because the job will be there when you are not, and you don't want people to say, what fool did that? So I'm a very slow worker. The other precept was if the other chap can do the job, let him. In other words, do only what is uniquely yours.
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Jez Humble @jezhumble.net · 23/09/2025
My team is hiring an SRE manager, in person in San Francisco: www.google.com/about/career...
google.com
Software Engineering Manager II, Site Reliability Engineering — Google Careers
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Zohran Kwame Mamdani @zohrankmamdani.bsky.social · 08/09/2025
"How Are the Very Rich Feeling About New York’s Next Mayor?" A Dramatic Reading of The Recent New York Times Dispatch from the Hamptons. Presented by The Gilded Age's Morgan Spector.
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Jez Humble @jezhumble.net · 09/09/2025
Anyone who wants the full story and context should read @sarahkendzior.bsky.social’s “Hiding in Plain Sight”. Read this excerpt from “Jane Doe v. Donald J. Trump and Jeffrey Epstein”
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Jez Humble @jezhumble.net · 04/09/2025
Here is a good article. Teaser: “I believe that all learning is fundamentally coercive”. hbr.org/2002/03/the-...
hbr.org
The Anxiety of Learning
Everyone touts learning organizations, but few actually exist. World-renowned psychologist Edgar H. Schein draws on decades of pioneering research to explain why.
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Jez Humble @jezhumble.net · 14/08/2025
Only during postmortem review!
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Jez Humble @jezhumble.net · 14/08/2025
A change that will do exactly what the author intended and couldn’t possibly cause an outage
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Jez Humble @jezhumble.net · 14/08/2025
You're welcome! If anyone else wants a signed copy of the DevOps Handbook (while stocks last) DM me with a receipt for US$100+ (any currency) to any of these charities supporting Palestinians, dated today: projecthope.org islamic-relief.org/appeals/pale... unrwa.org pcrf.net palestinercs.org/en
projecthope.org
Project HOPE | Advancing Global Health & Saving Lives
For more than 65 years, Project HOPE has been on the front lines of the world’s greatest health challenges.
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Jez Humble @jezhumble.net · 14/08/2025
Live footage of me in today’s postmortem review where a developer described the behavior-changing code that they couldn’t be bothered to put behind a feature flag / experiment as a “refactoring” and everyone kicked off about how dangerous “refactorings” are
media.tenor.com
a close up of a man 's face with a red light coming out of his eyes
ALT: a close up of a man 's face with a red light coming out of his eyes
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Jez Humble @jezhumble.net · 03/08/2025
* Screenshot of the receipt is fine * I am happy to do inscriptions, just let me know! * I am happy to send internationally
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Jez Humble @jezhumble.net · 03/08/2025
I have 45 signed copies of the DevOps Handbook to give away. DM me with a receipt for US$100 or more (any currency!) to any of the following charities supporting Palestinians dated today with your address. projecthope.org islamic-relief.org/appeals/pale... unrwa.org pcrf.net palestinercs.org/en
islamic-relief.org
Palestine Emergency Appeal
Help Save Lives in Palestine — Islamic Relief Is on the Ground Providing Life-Saving Aid. Support vulnerable families today
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Mar Hicks @histoftech.bsky.social · 18/07/2025
A U.S. surgeon trying to have a “peer to peer” consultation with a doctor at a health insurance company who is hiding his identity as her patient gets denied coverage. And it gets worse from there. You have to see it to believe it. (1/2)
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Jez Humble @jezhumble.net · 14/07/2025
This sounds very sensible!
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Jez Humble @jezhumble.net · 14/07/2025
I love watching the corrupt Democratic Party establishment, along with their paymasters and enablers in the media, running around absolutely peeing their pants at the thought of Mamdani becoming Mayor of NYC. I cannot wait for him to win.
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Jez Humble @jezhumble.net · 14/07/2025
Science publishing is industry whose incentives are spectacularly misaligned, and AI is already being put to tremendous use exploiting them www.theguardian.com/science/2025...
theguardian.com
Quality of scientific papers questioned as academics ‘overwhelmed’ by the millions published
Widespread mockery of AI-generated rat with giant penis in one paper brings problem to public attention
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Jez Humble @jezhumble.net · 14/07/2025
TIL that the behemoth that is the modern scientific publishing industry was created by Robert Maxwell (father of Ghislaine) www.theguardian.com/science/2017...
theguardian.com
Is the staggeringly profitable business of scientific publishing bad for science?
The long read: It is an industry like no other, with profit margins to rival Google – and it was created by one of Britain’s most notorious tycoons: Robert Maxwell
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Sarah Taber @sarahtaber.bsky.social · 13/07/2025
The corps like Publix that get mad about CIW & fair farm wages, it's not bc proper farm wages will put them out of business. It's because they get upset when ANY workers get collective bargaining wins. It's just generic anti-labor politics- not an existential threat to their business.
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Sarah Taber @sarahtaber.bsky.social · 13/07/2025
Ex-farm worker here. We need to talk about this whole "But a living wage for farm workers would spike the cost of food!" thing. Not true AT ALL. Y'all don't understand how fast experienced farm workers are. The average tomato picker pulls 650lbs per hour. At $20/hr, that's $0.03/lb for labor.
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Jez Humble @jezhumble.net · 13/07/2025
People are so ready to believe this shit that they're OK with pouring $160 billion into building a huge military operation that sweep migrants into internment camps, invades city parks bsky.app/profile/kenk..., and treats anyone who protests as an enemy adversary www.wired.com/story/dhs-te....
bsky.app
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Jez Humble @jezhumble.net · 13/07/2025
Also on crime: A National Institute of Justice funded study found undocumented immigrants were less than half as likely to be arrested as native-born U.S. citizens overall, as well as for violent crime: web.archive.org/web/20250128... (original article removed by current administration, of course).
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Jez Humble @jezhumble.net · 13/07/2025
So many believed the lie that immigrants will take their jobs & voted for 47 when really it's the GOP taking people's jobs & driving down wages to benefit huge, rent-seeking corporations. But why were you so ready to believe the lie? By @moreperfectunion.bsky.social www.youtube.com/watch?v=PlCj...
youtube.com
He Voted For Trump. It Cost Him His Job
YouTube video by More Perfect Union
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Jez Humble @jezhumble.net · 12/07/2025
When the first family separations of migrants happened under Pres. 45, one of the talking points was that it was being done to stop people trafficking. In fact, as this Pulitzer Prize winning investigation shows, it was done out of pure cruelty as a “deterrent” www.theatlantic.com/magazine/arc...
theatlantic.com
An American Catastrophe
The secret history of the U.S. government’s family-separation policy
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Jez Humble @jezhumble.net · 06/07/2025
“Any political system that prioritizes punishing those who protest genocide rather than stopping the killing has clearly exhausted itself.” www.theguardian.com/us-news/ng-i...
theguardian.com
The destruction of Palestine is breaking the world | Moustafa Bayoumi
The rules of the institutions that define our lives bend like reeds when it comes to Israel – so much that the whole global order is on the verge of collapse
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Jez Humble @jezhumble.net · 24/06/2025
Is that why the Apple campus is all curves?
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Jez Humble @jezhumble.net · 23/06/2025
Thank you so much for your kind words! ❤️ I’m very happy to hear my work has been helpful!
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Jez Humble @jezhumble.net · 22/06/2025
The ninth commandment would also like a word
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Jez Humble @jezhumble.net · 22/06/2025
Not that _that_ has stopped us before either!!
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Jez Humble @jezhumble.net · 22/06/2025
(Also obviously illegal under international law, not that it’s ever stopped the US / Israel before)
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Jez Humble @jezhumble.net · 22/06/2025
Catastrophic that after many months of funding and arming a genocide, the USA is now directly bombing Iran. All because 45 tore up the JCPOA agreement out of spite and hubris. The obstacle to peace in the Levant is the _actually_ nuclear-armed and genocidal Israeli state and its partner the USA.
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Jez Humble @jezhumble.net · 15/06/2025
Totally. I love his “three characteristics” definition of information for, the discussion, and how he ties it to culture. It has so many applications.
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Jez Humble @jezhumble.net · 15/06/2025
Yeah having not known about Edmondson's work (thanks again for that) it is very cool to see the connection verified in the data analysis!
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Jez Humble @jezhumble.net · 15/06/2025
Also, this is another paper of Westrum's I like: www.researchgate.net/publication/...
researchgate.net
(PDF) The study of information flow: A personal journey
PDF | Information flow has been shown to be a key variable in system safety. Not only is information flow vital to the organization’s “nervous system,”... | Find, read and cite all the research you ne...
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Jez Humble @jezhumble.net · 15/06/2025
Sorry the missing link here is that we tested both the Project Aristotle and the Westrum survey instruments, and found that the first two constructs of Aristotle ("psychological safety" and "dependability") are effectively measuring the same thing as our Westrum instrument (dora.dev/research/201...)
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Jez Humble @jezhumble.net · 15/06/2025
(cc @nicolefv.bsky.social)
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Jez Humble @jezhumble.net · 15/06/2025
On another note, we looked at the impact of autonomy, trust, and voice on culture in the 2018 State of DevOps report and the findings echo what Edmondson finds (dora.dev/research/201... pp61-66)
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Jez Humble @jezhumble.net · 15/06/2025
(Also I expect keeping the scope narrow is important from a research methodology perspective — but that is in its own way a systemic factor that limits the ability to connect these issues)
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Jez Humble @jezhumble.net · 15/06/2025
Yeah I mean even as someone with a ton of privilege I am careful what I say publicly because I don’t want to lose my job since that is a very expensive decision in the US, particularly in the current climate.
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Jez Humble @jezhumble.net · 15/06/2025
She has a positive definition too which I think captures some of this
Psychological safety is broadly defined as a climate in which people are comfortable expressing and being themselves. More specifically, when people have psychological safety at work, they feel comfortable sharing concerns and mistakes without fear of embarrassment or retribution. They are confident that they can speak up and won't be humiliated, ignored, or blamed. They know they can ask questions when they are unsure about something. They tend to trust and respect their colleagues. When a work environment has reasonably high psychological safety, good things happen: mistakes are reported quickly so that prompt corrective action can be taken; seamless coordination across groups or departments is enabled, and potentially game-changing ideas for innovation are shared. In short, psychological safety is a crucial source of value creation in organizations operating in a complex, changing environment.
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Jez Humble @jezhumble.net · 14/06/2025
Reading @patigallardo.bsky.social's review of Team Topologies patricia.no/2025/05/24/t... and she mentions the original research on psychological safety was by amycedmondson.com/psychologica.... I'm now reading Edmondson's book The Fearless Organization. Newsflash from 2018
Psychological safety is not immunity from consequences, nor is it a state of high self-regard. In psychologically safe workplaces, people know they might fail, they might receive performance feedback that says they're not meeting expectations, and they might lose their jobs due to changes in the industry environment or even to a lack of competence in their role. These attributes of the modern workplace are unlikely to disappear anytime soon. But in a psychologically safe workplace, people are not hindered by interpersonal fear. They feel willing and able to take the inherent interpersonal risks of candor. They fear holding back their full participation more than they fear sharing a potentially sensitive, threatening, or wrong idea. The fearless organization is one in which interpersonal fear is minimized so that team and organizational performance can be maximized in a knowledge intensive world. It is not one devoid of anxiety about the future!
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Jez Humble @jezhumble.net · 13/05/2025
And another one: ethz.ch/en/news-and-...
ethz.ch
ETH Zurich researchers discover new security vulnerability in Intel processors
Computer scientists at ETH Zurich discover new class of vulnerabilities in Intel processors, allowing them to break down barriers between different users of a processor using carefully crafted instruc...
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Jez Humble @jezhumble.net · 13/05/2025
“three new classes of self-training Spectre-v2 attacks, backed by two… exploits on recent Intel CPUs that leak kernel memory... Along the way, we uncovered two new hardware issues… that completely break domain isolation & re-enable traditional user-user, guest-guest, and even guest-host… attacks.”
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Jez Humble @jezhumble.net · 13/05/2025
Today’s fun news www.vusec.net/projects/tra...
vusec.net
Training Solo - vusec
On the Limitations of Domain Isolation Against Spectre-v2 Attacks TL;DR We present Training Solo, the first systematic analysis of self-training Spectre-v2 attacks that break the core assumption behin...
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Jez Humble @jezhumble.net · 10/05/2025
Hey, I’m just vibe tweeting here
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Jez Humble @jezhumble.net · 09/05/2025
As in: “hey, why are you sending me these changes for that feature that we A/B tested and decided not to build out?” “Oh, it’s been vibe prioritized.”
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Jez Humble @jezhumble.net · 09/05/2025
“Vibe prioritization”: when you have to do something because a VP thinks it’s a good idea rather than being stack ranked based on business value
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Jez Humble @jezhumble.net · 03/05/2025
This hasn’t taken off, but if it does, you should all go see Titanique in NYC before it ends its run on June 15. Definitely the best show I’ve ever seen. newyork.titaniquemusical.com
newyork.titaniquemusical.com
Home
When the music of Céline Dion makes sweet Canadian love with the film Titanic, you get TITANIQUE, NYC's smash-hit musical comedy.
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