Some decisions are easy to reverse — you can change a UI component, rename a variable, or swap a utility function with no lasting consequences. These are two-way doors: walk through, and if it's wrong, walk back.
Other decisions create gravity. Once traffic, users, or other code depends on them, changing course gets expensive. A database schema migration after launch. An API contract that external consumers rely on. An auth boundary that shapes your entire permission model. These are one-way doors.
The most expensive mistakes in software aren't bugs. They're irreversible architectural decisions made too quickly.
Utilice esta habilidad al crear nuevos archivos que representen decisiones arquitectónicas: modelos de datos, configuraciones de infraestructura, límites de autenticación, contratos API, canales de CI/CD o sistemas de eventos. Señala decisiones irreversibles y obliga a una discusión sobre compensaciones antes de comprometerse. Fuente: jamditis/claude-skills-journalism.