Martin Fowler(@martinfowler)

NEW POST A quick survey of recent engagement of my posts on social media, indicating which service ...

Martin Fowler (@martinfowler) — Wed, 09 Sep 2026 16:24:41 GMT

NEW POST

A quick survey of recent engagement of my posts on social media, indicating which service has by far the most engagement, and which service has seen a precipitous decline since early 2025.

martinfowler.com/articles/2026-…

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Fragments: dealing with AI's counterfeit utility, exasperated readers of LLMs, missing Creating Pass...

Martin Fowler (@martinfowler) — Tue, 08 Sep 2026 15:26:02 GMT

Fragments: dealing with AI's counterfeit utility, exasperated readers of LLMs, missing Creating Passionate Users, agents lack Verum Factum, three people making key decisions on AI

martinfowler.com/fragments/2026…

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NEW POST Like me, Sumeet Gayathri Moghe is tired of poor presentations with bad slide decks. He's s...

Martin Fowler (@martinfowler) — Tue, 08 Sep 2026 14:31:32 GMT

NEW POST

Like me, Sumeet Gayathri Moghe is tired of poor presentations with bad slide decks. He's started to write a series of posts on how to avoid these calamities, beginning with a post that questions whether a presentation is needed at all.

martinfowler.com/articles/never…

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NEW POST Giles Edwards-Alexander reports on how a team accidentally prompted a fleet of agents to ...

Martin Fowler (@martinfowler) — Wed, 02 Sep 2026 15:03:43 GMT

NEW POST

Giles Edwards-Alexander reports on how a team  accidentally prompted a fleet of agents to create a blackboard coordination system inside the git repository

martinfowler.com/articles/explo…

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Rachel's Ramblings: Maybe We Shouldn't Be Reviewing All This Code: Or, perhaps the problem isn't tha...

Martin Fowler (@martinfowler) — Wed, 02 Sep 2026 13:50:03 GMT

Rachel's Ramblings:
Maybe We Shouldn't Be Reviewing All This Code: Or, perhaps the problem isn't that AI has broken code review, maybe it’s that we've been using code review to solve the wrong problems

martinfowler.com/rachels-rambli…

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Fragments: LLM cliché highlighter, architecture for long-horizon autonomous agents, Continuous Integ...

Martin Fowler (@martinfowler) — Tue, 01 Sep 2026 19:55:05 GMT

Fragments: LLM cliché highlighter, architecture for long-horizon autonomous agents, Continuous Integration and agents, AI-generated super-viruses, prolific academic ghosts

martinfowler.com/fragments/2026…

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NEW POST In order to make AI effective, organizations need decent data. Pramod Sadalage and @preman...

Martin Fowler (@martinfowler) — Thu, 27 Aug 2026 13:23:20 GMT

NEW POST

In order to make AI effective, organizations need decent data. Pramod Sadalage and @premanandc  explain how: quality foundations, semantic context, clear access, and observability

martinfowler.com/articles/makin…

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Fragments: lack of AI whistleblowers, saving debris from AI bubble bursting, how to decide to skip L...

Martin Fowler (@martinfowler) — Mon, 24 Aug 2026 15:32:15 GMT

Fragments: lack of AI whistleblowers, saving debris from AI bubble bursting, how to decide to skip LinkedIn posts, agentic programming at Zalando, shredding US intelligence

martinfowler.com/fragments/2026…

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Rachel's Ramblings: Citizens Build, Agents Execute, Experts Govern - Why building an app over the we...

Martin Fowler (@martinfowler) — Wed, 19 Aug 2026 18:37:52 GMT

Rachel's Ramblings:
Citizens Build, Agents Execute, Experts Govern - Why building an app over the weekend isn't the same as building enterprise software

martinfowler.com/rachels-rambli…

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NEW POST Jim Highsmith explains that effective writing from a practitioner is a style distinct from...

Martin Fowler (@martinfowler) — Wed, 19 Aug 2026 18:20:54 GMT

NEW POST

Jim Highsmith explains that effective writing from a practitioner is a style distinct from academic writing or thought-leadership content

martinfowler.com/articles/pract…

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Fragments: introducing Rachel's Ramblings, XConf Europe, why no massive productivity gains from AI y...

Martin Fowler (@martinfowler) — Tue, 18 Aug 2026 15:09:19 GMT

Fragments: introducing Rachel's Ramblings, XConf Europe, why no massive productivity gains from AI yet, visualizing election data, safety challenge from AI, impact of AI in China

martinfowler.com/fragments/2026…

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Does telling a coding agent to do TDD by itself make a difference? Or is it one of the rare examples...

Martin Fowler (@martinfowler) — Tue, 11 Aug 2026 13:45:29 GMT

Does telling a coding agent to do TDD by itself make a difference? Or is it one of the rare examples where what's good for the human is irrelevant or bad for an agent?  Birgitta Böckeler runs experiments and shares her  thoughts.

martinfowler.com/articles/explo…

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Fragments: responsibility for rogue agents, indicators of a bubble bursting, dread of AI, praise for...

Martin Fowler (@martinfowler) — Tue, 04 Aug 2026 12:11:02 GMT

Fragments: responsibility for rogue agents, indicators of a bubble bursting, dread of AI, praise for gov.uk, getting data out of closed packages, eyes on Clacton

martinfowler.com/fragments/2026…

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NEW POST Giles Edwards-Alexander does an experiment to see if decomposing a large function helps re...

Martin Fowler (@martinfowler) — Thu, 30 Jul 2026 13:13:57 GMT

NEW POST

Giles Edwards-Alexander does an experiment to see if decomposing a large function helps reduce token costs, suggesting that is may now be possible to measure the economic benefit of refactoring

martinfowler.com/articles/explo…

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NEW POST Subagents get justified by time saved and parallel execution, but @techygarg explains tha...

Martin Fowler (@martinfowler) — Tue, 28 Jul 2026 13:16:27 GMT

NEW POST

Subagents get justified by time saved and parallel execution, but @techygarg  explains that what really matters is protecting the orchestrator's context.

martinfowler.com/articles/orche…

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Fragments: mismatched views of AI between engineering and C-suite, comparing dotcom and AI bubbles, ...

Martin Fowler (@martinfowler) — Tue, 21 Jul 2026 13:17:07 GMT

Fragments: mismatched views of AI between engineering and C-suite, comparing dotcom and AI bubbles, LLMs build it we run it, law professors prefer LLM answers, using DSLs with LLMs, the stench of LLM-speak

martinfowler.com/fragments/2026…

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NEW POST Nik Malykhin needed to run a Java 1.5 codebase on today's hardware. His initial try to use...

Martin Fowler (@martinfowler) — Thu, 16 Jul 2026 13:37:51 GMT

NEW POST

Nik Malykhin needed to run a Java 1.5 codebase on today's hardware. His initial try to use LLMs wasn't helpful, but he made progress when he guided the process with careful steps.

martinfowler.com/articles/archa…

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NEW POST LLMs generate code incredibly fast, but to ensure they generate exactly what is intended, ...

Martin Fowler (@martinfowler) — Tue, 14 Jul 2026 13:30:52 GMT

NEW POST

LLMs generate code incredibly fast, but to ensure they generate exactly what is intended, they need clear boundaries. @unmeshjoshi  shares his experience using abstractions and Domain-Specific Languages (DSLs) to provide a strong harness.

martinfowler.com/articles/llm-a…

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Fragments: FOSD discussions on harness engineering, self-hosting models, grand narrative, and bringi...

Martin Fowler (@martinfowler) — Mon, 13 Jul 2026 16:08:30 GMT

Fragments: FOSD discussions on harness engineering, self-hosting models, grand narrative, and bringing rocks. Saving money with fable, bleak future for developer education, does electron have a future, interactional and contributory expertise.

martinfowler.com/fragments/2026…

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NEW POST After setting out her factors of viability, Birgitta Böckeler now reports on her experienc...

Martin Fowler (@martinfowler) — Wed, 08 Jul 2026 14:29:30 GMT

NEW POST

After setting out her factors of viability, Birgitta Böckeler now reports on her experiences with local LLMs for programming. She compares them with two standard tasks and tries the best LLM in day-to-day use

martinfowler.com/articles/explo…

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NEW POST Birgitta Böckeler recently spent some time trying out running local LLMs for some programm...

Martin Fowler (@martinfowler) — Tue, 07 Jul 2026 12:40:55 GMT

NEW POST

Birgitta Böckeler recently spent some time trying out running local LLMs for some programming tasks. In this memo she outlines the factors that influence how viable they are for the job.

martinfowler.com/articles/explo…

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Fragments: Second future of software development retreat, ethics of working with AI, censorship via ...

Martin Fowler (@martinfowler) — Mon, 06 Jul 2026 13:06:04 GMT

Fragments: Second future of software development retreat, ethics of working with AI, censorship via DMCA, reacting to the high cost of tokens, a radical document in 1776

martinfowler.com/fragments/2026…

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NEW POST We've used AI with Bayer to help pharmaceutical researchers query decades of information b...

Martin Fowler (@martinfowler) — Tue, 16 Jun 2026 12:38:27 GMT

NEW POST

We've used AI with Bayer to help pharmaceutical researchers query decades of information buried in PDF reports. Sarang Sanjay Kulkarni describes the evolution from keyword-based search to a research assistant that can draft regulatory reports

martinfowler.com/articles/relia…

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Fragments: enjoying programming with LLMs, four types of LLM conversation, the crevasse between AI e...

Martin Fowler (@martinfowler) — Tue, 16 Jun 2026 06:47:40 GMT

Fragments: enjoying programming with LLMs, four types of LLM conversation, the crevasse between AI enthusiasts and skeptics, AI companies get product/market fit, the need for decentralization

martinfowler.com/fragments/2026…

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Fragments: Dodgy metrics for AI usage, history of tech removing jobs, benchmarking closed and open m...

Martin Fowler (@martinfowler) — Tue, 02 Jun 2026 09:26:01 GMT

Fragments: Dodgy metrics for AI usage, history of tech removing jobs, benchmarking closed and open models, LLMs multiply existing cruft, AI slop driving us crazy, I am the Global Interpreter Lock for agents

martinfowler.com/fragments/2026…

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Fragments:GOTO chat with Kent Beck, using AI to help restructure a gnarly codebase, open-source and ...

Martin Fowler (@martinfowler) — Wed, 27 May 2026 19:46:03 GMT

Fragments:GOTO chat with Kent Beck, using AI to help restructure a gnarly codebase, open-source and security, cognitive endurance, Gen Z future with AI, impact of AI on jobs, fumbling AI regulation

martinfowler.com/fragments/2026…

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NEW § Birgitta Böckeler finishes her post on sensors for coding agents by examining the role of a t...

Martin Fowler (@martinfowler) — Wed, 27 May 2026 15:07:54 GMT

NEW §

Birgitta Böckeler finishes her post on sensors for coding agents by examining the role of a test suite as a regression sensor, focusing on the role mutation testing can play.

martinfowler.com/articles/senso…

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NEW POST Four of my colleagues share their experiences in applying good security practices to vibe ...

Martin Fowler (@martinfowler) — Wed, 27 May 2026 14:45:50 GMT

NEW POST

Four of my colleagues share their experiences in applying good security practices to vibe coding.

martinfowler.com/articles/vibes…

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NEW § Birgitta Böckeler adds exploration of three sensors for static code analysis, with mixed resu...

Martin Fowler (@martinfowler) — Wed, 20 May 2026 14:33:15 GMT

NEW §

Birgitta Böckeler adds exploration of three sensors for static code analysis, with mixed results. Computational sensors alone cannot help us much, AI is needed to add semantic interpretation, and consider trade-offs.

martinfowler.com/articles/senso…

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NEW POST Birgitta Böckeler begins an article about her experiences with sensors in an agent harness...

Martin Fowler (@martinfowler) — Tue, 19 May 2026 16:45:04 GMT

NEW POST

Birgitta Böckeler begins an article about her experiences with sensors in an agent harness. This first part looks at static analysis with basic code linting.

martinfowler.com/articles/senso…

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Fragments: thoughts from a software development retreat, would I be a writer without text editors, u...

Martin Fowler (@martinfowler) — Thu, 14 May 2026 21:55:43 GMT

Fragments: thoughts from a software development retreat, would I be a writer without text editors, use LLMs as functions, don't use LLM skills, is the future of everything lies?

martinfowler.com/fragments/2026…

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NEW POST When I need to feed an LLM a lot of context, I can write it myself, or I can get an LLM to...

Martin Fowler (@martinfowler) — Thu, 14 May 2026 15:13:17 GMT

NEW POST

When I need to feed an LLM a lot of context, I can write it myself, or I can get an LLM to interview me for it.

martinfowler.com/bliki/Interrog…

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NEW POST Will there be source code in the future? To wrestle with this, we have to understand what ...

Martin Fowler (@martinfowler) — Tue, 12 May 2026 13:33:56 GMT

NEW POST

Will there be source code in the future? To wrestle with this, we have to understand what code is. Unmesh Joshi sees code as having two distinct but intertwined purposes: instructions to a machine and a conceptual model of the problem domain. 

martinfowler.com/articles/what-…

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Fragments: open-source framework for prompting patterns, musician sues google for defamation, apple ...

Martin Fowler (@martinfowler) — Tue, 05 May 2026 16:26:34 GMT

Fragments: open-source framework for prompting patterns, musician sues google for defamation, apple is thinking differently about AI spending, running LLMs locally, will The Genie be caught in the tar pit?

martinfowler.com/fragments/2026…

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Fragments: updated guide on AI coding, video on harness engineering, how long should a function be, ...

Martin Fowler (@martinfowler) — Wed, 29 Apr 2026 13:26:02 GMT

Fragments: updated guide on AI coding, video on harness engineering, how long should a function be, the problems of Software Brain and why AI is unpopular

martinfowler.com/fragments/2026…

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NEW POST Thoughtworks internal IT use a workflow for agentic programming called Structured-Prompt-D...

Martin Fowler (@martinfowler) — Tue, 28 Apr 2026 13:15:46 GMT

NEW POST

Thoughtworks internal IT use a workflow for agentic programming called Structured-Prompt-Driven Development (SPDD). @WeiZhang595190  and Jessie Jie Xia describe how this works with a simple example plus details in a github project. 

martinfowler.com/articles/struc…

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Fragments: 34th Thoughtworks Technology Radar, what happens when developers don't read the LLM's cod...

Martin Fowler (@martinfowler) — Tue, 21 Apr 2026 14:39:37 GMT

Fragments: 34th Thoughtworks Technology Radar, what happens when developers don't read the LLM's code, DirectFile and tech in large organizations

martinfowler.com/fragments/2026…

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Fragments: pragmatic summit video with Kent and Gergely, virtue of laziness, TDD and prompts, inspir...

Martin Fowler (@martinfowler) — Tue, 14 Apr 2026 13:22:20 GMT

Fragments: pragmatic summit video with Kent and Gergely, virtue of laziness, TDD and prompts, inspiration from Dark Star

martinfowler.com/fragments/2026…

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Last night I saw Central Square Theater’s excellent production of Breaking the Code. It’s about Alan...

Martin Fowler (@martinfowler) — Sat, 11 Apr 2026 13:09:00 GMT

Last night I saw Central Square Theater’s excellent production of Breaking the Code. It’s about Alan Turing, who made a monumental contribution to both my profession and the fate of free democracies.  Worth seeing if you’re near Boston this month.

centralsquaretheater.org/shows/breaking…

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Fragments: two podcasts, a worryingly well-done supply-chain attack, framework for tech documentatio...

Martin Fowler (@martinfowler) — Thu, 09 Apr 2026 13:25:56 GMT

Fragments: two podcasts, a worryingly well-done supply-chain attack, framework for tech documentation, and a particularly thoughtful AI coding experience

martinfowler.com/fragments/2026…

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NEW POST @techygarg finishes his series on reducing the friction in AI-Assisted Development with a...

Martin Fowler (@martinfowler) — Wed, 08 Apr 2026 13:41:38 GMT

NEW POST

@techygarg  finishes his series on reducing the friction in AI-Assisted Development with a practice that feeds back learnings from AI sessions into the team's shared artifacts, turning individual experience into collective improvement.

martinfowler.com/articles/reduc…

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NEW POST Modern hardware is fast, but software often fails to leverage it. Caer Sanders guides his ...

Martin Fowler (@martinfowler) — Tue, 07 Apr 2026 13:45:09 GMT

NEW POST

Modern hardware is fast, but software often fails to leverage it. Caer Sanders guides his work with mechanical sympathy. He distills this into principles: predictable memory access, awareness of cache lines, single-writer, natural batching

martinfowler.com/articles/mecha…

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Fragments: three layers of system health, AI as cognitive system 3, what's expensive if agents make ...

Martin Fowler (@martinfowler) — Thu, 02 Apr 2026 16:44:11 GMT

Fragments: three layers of system health, AI as cognitive system 3, what's expensive if agents make coding free, and the future of source code

martinfowler.com/fragments/2026…

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NEW POST Birgitta Böckeler wrote some initial thoughts about Harness Engineering last month. Since ...

Martin Fowler (@martinfowler) — Thu, 02 Apr 2026 13:28:13 GMT

NEW POST

Birgitta Böckeler wrote some initial thoughts about Harness Engineering last month. Since then she's been researching more and has now written a thoughtful mental model for understanding the topic.

martinfowler.com/articles/harne…

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NEW POST The quality of what AI coding assistants produce depends on how well the prompter articula...

Martin Fowler (@martinfowler) — Tue, 31 Mar 2026 15:25:48 GMT

NEW POST

The quality of what AI coding assistants produce depends on how well the prompter articulates team standards. @techygarg proposes treating such instructions as infrastructure: versioned, reviewed, and shared artifacts.

martinfowler.com/articles/reduc…

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Fragments: 80,000 people's opinion on AI, fixing the common gap in spec-driven development, weakenin...

Martin Fowler (@martinfowler) — Thu, 26 Mar 2026 17:17:57 GMT

Fragments: 80,000 people's opinion on AI, fixing the common gap in spec-driven development, weakening defenses against covert attacks on the U.S.

martinfowler.com/fragments/2026…

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NEW POST ADRs are short documents that capture a decision, structured into logs that reveal a histo...

Martin Fowler (@martinfowler) — Tue, 24 Mar 2026 15:36:29 GMT

NEW POST

ADRs are short documents that capture a decision, structured into logs that reveal a history of architectural thinking for a product

martinfowler.com/bliki/Architec…

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Fragments: code review isn't just catching bugs, what role for observability in agentic programming,...

Martin Fowler (@martinfowler) — Thu, 19 Mar 2026 15:59:44 GMT

Fragments: code review isn't just catching bugs, what role for observability in agentic programming, what we lose with GPS over maps

martinfowler.com/fragments/2026…

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NEW POST Conversations with AI are ephemeral, decisions made early lose attention as the conversati...

Martin Fowler (@martinfowler) — Tue, 17 Mar 2026 14:07:41 GMT

NEW POST

Conversations with AI are ephemeral, decisions made early lose attention as the conversation continues, and disappear entirely with a new session. @techygarg  explains how to externalize the decision context into a living document.

martinfowler.com/articles/reduc…

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Fragments: supervisory engineering, 2 sets of 8 levels, generating code to an architecture, perils o...

Martin Fowler (@martinfowler) — Mon, 16 Mar 2026 14:22:33 GMT

Fragments: supervisory engineering, 2 sets of 8 levels, generating code to an architecture, perils of detecting AI-aided writing, should humans review code?

martinfowler.com/fragments/2026…

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