Rebecca Wirfs-Brock
@rebeccawb.bsky.social
SW Designer/consultant/mentor, author, inventor of Responsibility-Driven Design & xDD meme, heuristica (design heuristics!), patterns enthusiast, science/engineering nerd, jogger, gardener, amateur baker
wirfs-brock.com/rebecca
wirfs-brock.com/rebecca
Pinned
Rebecca’s Web – Agile Quality Patterns
Rebecca Wirfs-Brock On the Web
wirfs-brock.com
In wirfs-brock.com/rebecca/blog... , I introduce my latest topical collection: 23 patterns on agile quality--patterns for infusing system quality&quality-assurance practices into agile teams. Instead of searching for obscure conference proceedings, they are now easily accessible. Feedback welcome!
Just posted: a pre-print version of the paper I wrote w Lise Hvatum for EuroPLoP 2025: What it Means to Be A Patterns Community: wirfs-brock.com/rebecca/pape...
For those who build communities, I'd love to hear your thoughts &heuristics you've used to keep communities alive, thriving, &energized.
For those who build communities, I'd love to hear your thoughts &heuristics you've used to keep communities alive, thriving, &energized.
Rebecca’s Web – What It Means to Be a Patterns Community
A reflection on the central values and characteristics of the Hillside Group patterns community.
wirfs-brock.com
January 30, 2026 at 5:25 PM
Just posted: a pre-print version of the paper I wrote w Lise Hvatum for EuroPLoP 2025: What it Means to Be A Patterns Community: wirfs-brock.com/rebecca/pape...
For those who build communities, I'd love to hear your thoughts &heuristics you've used to keep communities alive, thriving, &energized.
For those who build communities, I'd love to hear your thoughts &heuristics you've used to keep communities alive, thriving, &energized.
OK...I invite you to join this discussion, now you know when it is. (Time is notoriously hard to model BTW)
Managing community events across time zones is never easy, time zones 1 - 0 organisers.
Last week, we made a scheduling mistake for our upcoming session "Critically Engaging with Models" with @rebeccawb.bsky.social. buff.ly/6tJcZMh
...
Last week, we made a scheduling mistake for our upcoming session "Critically Engaging with Models" with @rebeccawb.bsky.social. buff.ly/6tJcZMh
...
Critically Engaging with Models a conversation with Rebecca
In this session, we are joined by Rebecca Wirfs-Brock, who will first present a short talk on their essay Critically Engaging With Models followed by a group discussion. It would be great if you…
buff.ly
January 23, 2026 at 2:44 PM
OK...I invite you to join this discussion, now you know when it is. (Time is notoriously hard to model BTW)
Reposted by Rebecca Wirfs-Brock
NEW POST
I had a conversation with Unmesh Joshi, and Rebecca Parsons where we talked about the feedback loop between the "what" and "how" in software development, and the role LLMs play in it.
martinfowler.com/articles/con...
I had a conversation with Unmesh Joshi, and Rebecca Parsons where we talked about the feedback loop between the "what" and "how" in software development, and the role LLMs play in it.
martinfowler.com/articles/con...
Conversation: LLMs and the what/how loop
How the feedback loop between “what” and “how” shapes programming structure — and how paradigms and LLMs fit into that loop.
martinfowler.com
January 21, 2026 at 2:49 PM
NEW POST
I had a conversation with Unmesh Joshi, and Rebecca Parsons where we talked about the feedback loop between the "what" and "how" in software development, and the role LLMs play in it.
martinfowler.com/articles/con...
I had a conversation with Unmesh Joshi, and Rebecca Parsons where we talked about the feedback loop between the "what" and "how" in software development, and the role LLMs play in it.
martinfowler.com/articles/con...
It'll be me leading the discussion. I'm looking forward to it! Come, bring your favorite model and your questions.
You can read the essay we will be debating here: wirfs-brock.com/rebecca/blog...
I hope you join us for a lively discussion.
I hope you join us for a lively discussion.
January 19, 2026 at 4:53 PM
It'll be me leading the discussion. I'm looking forward to it! Come, bring your favorite model and your questions.
I've been on an exceptionally lucky streak playing wordle. Today in 2! Wordle 1,672 2/6
🟨🟩⬜🟩⬜
🟩🟩🟩🟩🟩
WordleBot
Skill 99/99
Luck 91/99
And now, back to reality and working on taxes.....:-(
🟨🟩⬜🟩⬜
🟩🟩🟩🟩🟩
WordleBot
Skill 99/99
Luck 91/99
And now, back to reality and working on taxes.....:-(
January 16, 2026 at 5:28 PM
I've been on an exceptionally lucky streak playing wordle. Today in 2! Wordle 1,672 2/6
🟨🟩⬜🟩⬜
🟩🟩🟩🟩🟩
WordleBot
Skill 99/99
Luck 91/99
And now, back to reality and working on taxes.....:-(
🟨🟩⬜🟩⬜
🟩🟩🟩🟩🟩
WordleBot
Skill 99/99
Luck 91/99
And now, back to reality and working on taxes.....:-(
You can read the essay we will be debating here: wirfs-brock.com/rebecca/blog...
I hope you join us for a lively discussion.
I hope you join us for a lively discussion.
January 5, 2026 at 2:47 PM
You can read the essay we will be debating here: wirfs-brock.com/rebecca/blog...
I hope you join us for a lively discussion.
I hope you join us for a lively discussion.
Reposted by Rebecca Wirfs-Brock
Oh, so now it's fine to have a war on Christmas
Fox guest on how to save money during the holidays:
"Remember, adults don't need gifts. Focus on the people in your life who are aged 3 to 18. Grandma doesn't need slippers. If they don't live by you, don't get them a gift."
"Remember, adults don't need gifts. Focus on the people in your life who are aged 3 to 18. Grandma doesn't need slippers. If they don't live by you, don't get them a gift."
November 17, 2025 at 10:51 PM
Oh, so now it's fine to have a war on Christmas
Reposted by Rebecca Wirfs-Brock
"I’ve seen things in bounded space" (suno.com/s/s126xbKu0s...) is the soundtrack of our "the DDD Horror Picture Show" talk with @paulinejamin.bsky.social
Next and final performance at @newcrafts.bsky.social Paris next week. See you there.
Next and final performance at @newcrafts.bsky.social Paris next week. See you there.
I’ve seen things in bounded space
Listen and make your own on Suno.
suno.com
October 31, 2025 at 6:43 PM
"I’ve seen things in bounded space" (suno.com/s/s126xbKu0s...) is the soundtrack of our "the DDD Horror Picture Show" talk with @paulinejamin.bsky.social
Next and final performance at @newcrafts.bsky.social Paris next week. See you there.
Next and final performance at @newcrafts.bsky.social Paris next week. See you there.
Reposted by Rebecca Wirfs-Brock
Reposted by Rebecca Wirfs-Brock
The quote "All models are wrong but some are useful" should not be read as an excuse to stick with your model. It's a call to actively search for more useful models.
October 27, 2025 at 7:28 PM
The quote "All models are wrong but some are useful" should not be read as an excuse to stick with your model. It's a call to actively search for more useful models.
Reposted by Rebecca Wirfs-Brock
Our annual patterns conference (PLoP) is Oct 12-15. We're opening up Sunday for 1/2 day workshops. $100 for workshop + dinner. Choices:
Architecture & Application Modernization Patterns
or
Fearless Change Patterns and using them to create organizational change
ti.to/hillside/plo...
Join us!
Architecture & Application Modernization Patterns
or
Fearless Change Patterns and using them to create organizational change
ti.to/hillside/plo...
Join us!
PLoP 2025
Pattern Languages of Programs, People & Practices
ti.to
October 9, 2025 at 9:58 PM
Our annual patterns conference (PLoP) is Oct 12-15. We're opening up Sunday for 1/2 day workshops. $100 for workshop + dinner. Choices:
Architecture & Application Modernization Patterns
or
Fearless Change Patterns and using them to create organizational change
ti.to/hillside/plo...
Join us!
Architecture & Application Modernization Patterns
or
Fearless Change Patterns and using them to create organizational change
ti.to/hillside/plo...
Join us!
Reposted by Rebecca Wirfs-Brock
Video taken one hour ago outside the Portland ICE facility of the violent insurrectionists in question
October 5, 2025 at 11:48 PM
Video taken one hour ago outside the Portland ICE facility of the violent insurrectionists in question
Reposted by Rebecca Wirfs-Brock
I love this! All projects should have to provide documentary evidence of the remaining mess when the project is officially done.
mastodon.social/@cmconseils/...
mastodon.social/@cmconseils/...
Laura Manach :bongoCat: (@cmconseils@mastodon.social)
Attached: 1 image
Hard agree
mastodon.social
October 2, 2025 at 9:42 PM
I love this! All projects should have to provide documentary evidence of the remaining mess when the project is officially done.
mastodon.social/@cmconseils/...
mastodon.social/@cmconseils/...
Reposted by Rebecca Wirfs-Brock
We're celebrating 1 trillion webpages archived in the Wayback Machine on October 22 🎉
We want to hear from you: Why is the Wayback Machine important to YOU? Make a short video & share it with hashtag #Wayback1T 🤳
Let's celebrate a trillion memories together.
INFO ➡️ blog.archive.org/2025/09/23/
We want to hear from you: Why is the Wayback Machine important to YOU? Make a short video & share it with hashtag #Wayback1T 🤳
Let's celebrate a trillion memories together.
INFO ➡️ blog.archive.org/2025/09/23/
September 29, 2025 at 6:15 PM
We're celebrating 1 trillion webpages archived in the Wayback Machine on October 22 🎉
We want to hear from you: Why is the Wayback Machine important to YOU? Make a short video & share it with hashtag #Wayback1T 🤳
Let's celebrate a trillion memories together.
INFO ➡️ blog.archive.org/2025/09/23/
We want to hear from you: Why is the Wayback Machine important to YOU? Make a short video & share it with hashtag #Wayback1T 🤳
Let's celebrate a trillion memories together.
INFO ➡️ blog.archive.org/2025/09/23/
Reposted by Rebecca Wirfs-Brock
“Every model makes a choice about what is important, what categories we classify things in, what we see, what’s invisible, what’s valued, or even what’s valid.“
— @rebeccawb.bsky.social and @mathiasverraes.bsky.social
from the paper we’re discussing on Monday, Oct 6 👇
— @rebeccawb.bsky.social and @mathiasverraes.bsky.social
from the paper we’re discussing on Monday, Oct 6 👇
Next in the #PapersInSystems Discussion Series:
Critically Engaging with Models, by @rebeccawb.bsky.social
and @mathiasverraes.bsky.social
When: October 6th, 2025, 1–2pm Eastern Time (US/Canada)
Paper: wirfs-brock.com/rebecca/blog...
More info/Sign-up: ti.to/bredemeyer/p...
Critically Engaging with Models, by @rebeccawb.bsky.social
and @mathiasverraes.bsky.social
When: October 6th, 2025, 1–2pm Eastern Time (US/Canada)
Paper: wirfs-brock.com/rebecca/blog...
More info/Sign-up: ti.to/bredemeyer/p...
Rebecca’s Web – Critically Engaging With Models
Rebecca Wirfs-Brock On the Web
wirfs-brock.com
September 29, 2025 at 12:40 PM
“Every model makes a choice about what is important, what categories we classify things in, what we see, what’s invisible, what’s valued, or even what’s valid.“
— @rebeccawb.bsky.social and @mathiasverraes.bsky.social
from the paper we’re discussing on Monday, Oct 6 👇
— @rebeccawb.bsky.social and @mathiasverraes.bsky.social
from the paper we’re discussing on Monday, Oct 6 👇
Reposted by Rebecca Wirfs-Brock
Domain-Driven Design London's next event is 𝐎𝐜𝐭𝐨𝐛𝐞𝐫 𝟗𝐭𝐡, 𝐢𝐧-𝐩𝐞𝐫𝐬𝐨𝐧 in London! @icooper.bsky.social will be presenting 𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐲-𝐃𝐫𝐢𝐯𝐞𝐧 𝐃𝐞𝐬𝐢𝐠𝐧 𝐑𝐞𝐯𝐢𝐬𝐢𝐭𝐞𝐝. Grab your tickets here: dddlondon.com/events/responsibility-driven-design/
Responsibility-Driven Design Revisited | Domain-Driven Design London
Responsibility-Driven Design (RDD) is the key technique for splitting our system into co-operating objects. How do we use it with other techniques to apply modern DDD?
dddlondon.com
September 24, 2025 at 8:53 PM
Domain-Driven Design London's next event is 𝐎𝐜𝐭𝐨𝐛𝐞𝐫 𝟗𝐭𝐡, 𝐢𝐧-𝐩𝐞𝐫𝐬𝐨𝐧 in London! @icooper.bsky.social will be presenting 𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐲-𝐃𝐫𝐢𝐯𝐞𝐧 𝐃𝐞𝐬𝐢𝐠𝐧 𝐑𝐞𝐯𝐢𝐬𝐢𝐭𝐞𝐝. Grab your tickets here: dddlondon.com/events/responsibility-driven-design/
I hope you can join the Fearless Change Campfire free virtual event on Oct 3, 9 a.m. EDT. Mary Lynn Manns and Linda Rising will host this event...with a lot of story telling and sharing of how people have made changes in their organizations. I'm going, just to hear others' wisdom!
September 24, 2025 at 11:54 PM
I hope you can join the Fearless Change Campfire free virtual event on Oct 3, 9 a.m. EDT. Mary Lynn Manns and Linda Rising will host this event...with a lot of story telling and sharing of how people have made changes in their organizations. I'm going, just to hear others' wisdom!
Reposted by Rebecca Wirfs-Brock
"Pat, why do you carry that ridiculous 600mm lens on long hikes?"
Buddy, I can see mountains reflected in the eyes of a trailside pika.
Buddy, I can see mountains reflected in the eyes of a trailside pika.
August 28, 2025 at 4:18 PM
"Pat, why do you carry that ridiculous 600mm lens on long hikes?"
Buddy, I can see mountains reflected in the eyes of a trailside pika.
Buddy, I can see mountains reflected in the eyes of a trailside pika.
This year marks the 32nd year of the PLoP conference held in the beautiful Columbia River Gorge at Skamania Lodge. Spark your creativity. Satisfy your itch to explore the potential of patterns. Submit a proposal for an Imagination Run Wild session. Feel free to ask me Qs
See: plopcon.org/plop2025/
See: plopcon.org/plop2025/
July 28, 2025 at 8:04 PM
This year marks the 32nd year of the PLoP conference held in the beautiful Columbia River Gorge at Skamania Lodge. Spark your creativity. Satisfy your itch to explore the potential of patterns. Submit a proposal for an Imagination Run Wild session. Feel free to ask me Qs
See: plopcon.org/plop2025/
See: plopcon.org/plop2025/
Reposted by Rebecca Wirfs-Brock
I’m doing a thing!
I don’t think the problem with Democrats is our policies, or that some of us are trans. It’s that too many Democrats are desperate to be liked by people they look down on.
I don’t look down on baristas: I was one.
I hope to be of service again.
I don’t think the problem with Democrats is our policies, or that some of us are trans. It’s that too many Democrats are desperate to be liked by people they look down on.
I don’t look down on baristas: I was one.
I hope to be of service again.
I am running for Congress to fight for our country. I’m not here to be polite – I am here to stand up for the working class. Together we’ll prove what should’ve been obvious all along: trans people aren’t political props - we’re leaders.
Visit bethfordemocracy.com to learn more about our campaign!
Visit bethfordemocracy.com to learn more about our campaign!
July 17, 2025 at 1:44 PM
I’m doing a thing!
I don’t think the problem with Democrats is our policies, or that some of us are trans. It’s that too many Democrats are desperate to be liked by people they look down on.
I don’t look down on baristas: I was one.
I hope to be of service again.
I don’t think the problem with Democrats is our policies, or that some of us are trans. It’s that too many Democrats are desperate to be liked by people they look down on.
I don’t look down on baristas: I was one.
I hope to be of service again.
I'm looking forward to DDD Europe next week! I'm leading a hands-on workshop, Expanding Your Design Heuristics one Experiment at a Time... where we'll be designing experiments and learning about sharing/collecting our design heuristics.
2025.dddeurope.com
2025.dddeurope.com
DDD Europe 2025 - Software Modelling & Design Conference
2025.dddeurope.com
May 29, 2025 at 1:56 PM
I'm looking forward to DDD Europe next week! I'm leading a hands-on workshop, Expanding Your Design Heuristics one Experiment at a Time... where we'll be designing experiments and learning about sharing/collecting our design heuristics.
2025.dddeurope.com
2025.dddeurope.com
Reposted by Rebecca Wirfs-Brock
I'm excited to be running a brand new ✨ hands-on 🙌 workshop at @dddeu.bsky.social in a week's time! Join me for 2 hours of design as we explore a problem. What is design? I'll tell you via the #ACEDmodel
#software #softwareDesign #softwareDevelopment #softwareArchitecture #softwareEngineering
#software #softwareDesign #softwareDevelopment #softwareArchitecture #softwareEngineering
May 29, 2025 at 10:16 AM
I'm excited to be running a brand new ✨ hands-on 🙌 workshop at @dddeu.bsky.social in a week's time! Join me for 2 hours of design as we explore a problem. What is design? I'll tell you via the #ACEDmodel
#software #softwareDesign #softwareDevelopment #softwareArchitecture #softwareEngineering
#software #softwareDesign #softwareDevelopment #softwareArchitecture #softwareEngineering
Reposted by Rebecca Wirfs-Brock
The 5 stages of grieving, UK edition
May 29, 2025 at 6:50 AM
The 5 stages of grieving, UK edition
Reposted by Rebecca Wirfs-Brock
Knowledge of the complex systems we work within, and design-evolve, is distributed. Acting that impacts the system, is too. We will explore how we can shape and evolve our systems -- as systems: buff.ly/cFlCFsn
May 29, 2025 at 12:02 PM
Knowledge of the complex systems we work within, and design-evolve, is distributed. Acting that impacts the system, is too. We will explore how we can shape and evolve our systems -- as systems: buff.ly/cFlCFsn