Editorial article **SFEIR AI** published on sfeir.com on **September 6, 2026** (~9,000 characters, seven sections, two sources noted). It recaps an episode of the **DataGen** podcast hosted by **Robin Conquet**, recorded at the **Dev Summit** co-organized by **Adeo** and **Decathlon** (Lille, **May 26-28, 2026**, more than **2,000** attendees), with **Matthieu Grymonprez**, who heads digital, tech, and data at Adeo (Leroy Merlin, Weldom, Obramat), and **Romain Taillade**, Global CTO of Decathlon. Three takeaways. **(A)** The platformization carried out over five years to absorb Leroy Merlin's marketplace (**60,000** in-store references, several million online) and Decathlon's expansion (**more than 50** countries) was not aimed at agentic AI, but forms its foundation: *"the platform built the muscles, the age of intelligence builds the nervous system."* **(B)** Three named workstreams — the development **harness**, zone-based **security** across the IT system (zero agentic activity on payment, the checkout flow, and the supply chain), and **data semantics**, tackled by vertical and where Adeo admits it is in debt. **(C)** A precedent the group paid for: self-service BI produced more than **150,000 dashboards** before the return to certified data products. Grymonprez's framing sentence holds it all together — *"an agent has no common sense"*: it applies the definition as given and accelerates disorder wherever it is lacking. Continues, with the same executive, [[alafrench-grymonprez-adeo-ia-agentique-grands-groupes-2026-06-18]].
#Agentic AI#platformization#API-exposed business domains
SFEIR AI (voix éditoriale du cabinet) · article non signé individuellement. Restitue un entretien de Matthieu Grymonprez (Adeo) et Romain Taillade (Decathlon).
Post by **David "Pragdave" Thomas** (co-author of *The Pragmatic Programmer*, signatory of the Agile Manifesto) published on **June 6, 2026** on his Substack newsletter. **Thesis**: AI does not abolish code degradation, it **accelerates** it. While adding features to a small personal animation/graphics project with **Claude**, the author moves from initial enthusiasm (oklch, SVG animations shipped in a week) to permanent regression cycles by week two. Striking formulation: what teams took ***"18 months, or even more"*** to rot, he reached in ***"18 hours spread over five evenings."*** **Root cause**: the abandonment of **code hygiene** (massive duplication, local solutions to systemic problems, over-conditioning, proliferation of special cases). **Behavioral diagnosis**: LLMs optimize for user engagement and satisfaction (*"That's a great idea, Dave!"*) rather than durability — they are ***"puppy-dog junior developers, eager to please but quite messy to have around"*** who constantly propose new features and discourage refactoring. **Central insight**: any non-developer can succeed at the *"first week"* of AI coding; it is **professional judgment** — knowing when to stop to refactor — that separates the experienced engineer from the novice. **Epigraph** (Gordon Bell): *"Every big computing disaster has come from taking too many ideas and putting them in one place."* **Conclusion**: ***"It's still just programming"*** — untended code rots, whether in 18 hours or 18 months; everything learned about good code still holds, the effect is simply **amplified**. Converges with the *"the faster execution gets, the stricter the framework must be"* doctrine of [[rafal-wenvision-ingenierie-logicielle-ere-ia-tout-change-rien-ne-change-2026-06-01]], the *"AI-assisted development is a trap without continuous delivery"* of [[farley-continuous-delivery-ai-assisted-development-trap-2026-05-13]], and the *"AI moves bottlenecks, it doesn't eliminate them"* of dropbox-okumura-beyond-code-generation-engineering-productivity-ai-agents-2026-05-28; a craftsmanship counterpoint to vibe coding from karpathy-vibe-coding-agentic-engineering-software-3-0-2026-04-29.
#code hygiene#code rot#code degradation
**David Thomas** (alias **« Pragdave »**) · co-auteur avec Andy Hunt de *The Pragmatic Programmer* (1999, éd. 20e anniversaire 2019) · co-fondateur de **The Pragmatic Bookshelf** et l'un des **17 signataires du Manifeste Agile** (2001). Figure historique du *software craftsmanship*. Billet publié le **6 juin 2026** sur sa newsletter Substack *articles.pragdave.me*.