Jakob's Law — familiarity/conventions. Use this when an interface, report, doc, or dashboard may not work the way users already expect…
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Design & Media
11 agent skills — instructions the agent loads on demand. 11 of 11 are free. Median context cost 443 tokens.
Hick's Law — choice load. Use this when counting choices at each decision point (menus, filters, toggles, tabs, settings, entry…
Fitts's Law — target size and distance. Use this when auditing or applying hit-area sizes, CTA reach, thumb zones, tiny controls, or risky…
Miller's Law — 7±2 chunking. Use this when auditing or applying working-memory load: walls of text, ungrouped legends/tables, or staging…
Proximity Law — spatial grouping. Use this when auditing or applying whether spacing communicates relationships (labels near fields…
Von Restorff Effect — distinctiveness. Use this when auditing or applying one deliberate standout per view (primary action, key finding…
Serial Position Effect — first and last.
Tesler's Law — conservation of complexity.
Doherty Threshold — fast clear response.
Peak-End Rule — design the peak, design the end.
Family router for the 10 UX design laws.
The rest either hold an API key issued by the publisher or ask for nothing.
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