- So what are the design ideas in this new approach? Well, the key idea is one of the oldest (and best). If we could structure our software in a modular fashion, with each module independent of the others, we could generate code one module at a time. That means the LLM’s context can be just the one module, and not the whole codebase. And since important behavioral properties would be encapsulated within individual modules, those properties would, by definition, continue to hold when other modules are modified. - Concept design makes modularity much easier to achieve. Concepts are defined not by entities but by user-facing purposes. So different functions associated with users (authentication, naming, profiles, notifications, preferences, etc) would be factored into distinct concepts. - Concepts are a new kind of module which, unlike traditional modules, are user-facing (always having a purpose that maps directly to some user needs), fully decoupled from one another, and that separate concerns more cleanly --- (Jackson, 2025)