Atomic Design Is a Change-Control Map
Use Atomic Design levels to reason about component responsibility and change blast radius.
Principle: Atomic Design is most useful when it predicts inheritance, not when it creates fancy labels. The ladder is about responsibility Atoms carry primitive decisions. Molecules combine primitives into reusable interaction units. Organisms coordinate multiple parts for a recognizable interface section. When a change lands at the wrong level, reuse becomes accidental pressure instead of leverage. Use the smallest responsible level If a behavior is required everywhere, make it primitive. If it appears only in a specific interaction, keep it in the molecule or organism. This keeps the system stable while still giving product teams reusable building blocks. Review inheritance…
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