UX Interaction Design Handbook
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Interaction Design Laws

Postel's Law (Robustness Principle)

Visual Demonstration

♿ Accessibility & CognitionPostel's LawAccept anything+1 (415) 555-0100415-555-0100415.555.01004155550100→Emit one canonical+14155550100E.164 format
Doherty ThresholdParkinson's Law
Deepesh Barjatya
by Deepesh Barjatya