
97 articles by Martin Fowler.



“Vibe coding” - the practice of non-technical citizen builders using generative AI tools to rapidly develop applications, this has significantly accelerated software prototyping. However, because AI agents naturally prioritise the path of least resistance, they frequently recommend insecure configurations, creating systemic security exposure across industries. To combat this we need to write a sec










I’m about to head away from looking after this site for a few weeks (part vacation, part work stuff). As I contemplate some weeks away from the daily routine, I feel an urge to share some scattered thoughts about the state of LLMs and AI.


Is an LLM a stubborn donkey, a genie, a slot machine, or Uriah Heep?



Comparing engagement on two dozen recent social media posts


I see a continued fragmentation of social media as people leave X(Twitter).




How I use, and render, footnotes



Continuous Integration is a software development practice where each member of a team merges their changes into a codebase together with their colleagues changes at least daily. Each of these integrations is verified by an automated build (including test) to detect integration errors as quickly as possible. Teams find that this approach reduces the risk of delivery delays, reduces the effort of in





Distributed systems provide a particular challenge to program. They often require us to have multiple copies of data, which need to keep synchronized. Yet we cannot rely on processing nodes working reliably, and network delays can easily lead to inconsistencies. Despite this, many organizations rely on a range of core distributed software handling data storage, messaging, system management, and co



Asking Stable Diffusion for "portrait of technical author"

My account of an internal chat with Xu Hao, where he shows how he drives ChatGPT to produce useful self-tested code. His initial prompt primes the LLM with an implementation strategy (chain of thought prompting). His prompt also asks for an implementation plan rather than code (general knowledge prompting). Once he has the plan he uses it to refine the implementation and generate useful sections o




With the current uncertainty over Twitter, I'm starting to explore using Mastodon


The things I do to make Twitter useful and avoid the time-traps

There are arguments about whether a testing portfolio should be a pyramid or more like honeycomb. My second biggest issue with this argument is that it's rendered opaque by the fact that it's not clear what people see as the difference between unit and integration tests.

How I plot a muted-spaghetti chart with R, including facets.

It's often necessary to access the historical values of some property. But sometimes this history itself needs to be modified in response to retroactive updates. Bitemporal history treats time as two dimensions: actual history records what history should be given perfect transmission of information, while record history captures how our knowledge of history changes.



Recent events highlight our need to take serious measures to counter lies that are undermining democracies.


When a news story of dubious provenance appears, should social media use a temporary block to slow its spread?

A google sheets script is a handy way to share a short script for non-programmers.

In business meetings, it's common to compare groups of numbers by comparing their averages. But doing so often hides important information in the distribution of the numbers in those groups. There are a number of data visualizations that shine a light on this information. These include strip charts, histograms, density plots, box plots, and violin plots. These are easy to produce with freely avail

Modern source-control systems provide powerful tools that make it easy to create branches in source code. But eventually these branches have to be merged back together, and many teams spend an inordinate amount of time coping with their tangled thicket of branches. There are several patterns that can allow teams to use branching effectively, concentrating around integrating the work of multiple de







Get good audio, use gallery view, mute if not talking, and welcome the cat.