Contents 6. Consistency & Coherence
How systems remain predictable, learnable, and unified as they scale.
These enable learning transfer and reduce friction at scale.
Mission statement
Make systems predictable and learnable by preserving coherence across interactions, patterns, and time as products scale.
Subcategories
1.ConsistencyHow to preserve stable meaning over time.“Can users of your system rely on learned behavior across time and context?”9 directives2.ConventionsHow systems align with external user expectations.“Does your system honor established user expectations?”8 directives3.PatternsHow to scale behavior without fragmentation.“Does the growth of your system preserve user-learned patterns rather than replace them?”9 directives4.Design System IntegrityHow systems maintain coherence as they evolve.“Will your system remain coherent as it evolves?”8 directives