Random Access(ed) Memories

There’s a lot of chat going around on what is the role of unit tests in this AI age. Are they still useful? are they an artifact from the past where the code was more human-driven and we needed those guardrails to make sure we don’t break pre-existing behavior? or are they really useful for more than testing the written code? So… this is my take and why I do think not only they are necessary but more important than ever, which is a bit connected to all the advantages I see outside of the popular/most commonly referred one. ...

UPDATE 2026-11-11 / Added diagrams, the Permissions section, fixed some typos and some information on when each when the tool-call hooks run. It’s pretty important to have a tight control on how our Claude Code is configured. The more we understand how it’s set, the more confident we can be that our agents will do what we want them to do, and avoid unwanted consequences. As we’re in the infancy of this tech, and things change very quickly, have in mind I’m writing this on October 2026, and things might change drastically in the future. ...

The web became a pretty hostile place to browse/navigate. It’s almost mandatory to have an ad-blocker to stop intrusive ads, popups, trackers and other maliciuos content. And let’s not even talk about mobile because the situation there is even worse. I think this is making a lot of people to go back to more simple ways to get information. Of course, I don’t think RSS will become popular but who knows. Anyways, I just added RSS support in case you want. ...