Individual skill

errors

Use this skill whenever a design must accommodate the inevitability of human error — typos, wrong-button presses, misread instructions, mistimed actions, misunderstandings of system state. Trigger when designing form validation, input handling, destructive flows, complex multi-step procedures, alert systems, or any UI where users can do the wrong thing. Trigger when post-incident analyses reveal patterns of "human error" — most are design errors in disguise. Errors is one of the foundational principles in 'Universal Principles of Design' (Lidwell, Holden, Butler 2003), grounded in Norman's and Reason's foundational human-error research.

plugins/interaction-and-control-principles/skills/errors/SKILL.md

Source commit 09b9858fc983fe917b7fedae67a9625d9e6655a6

What was checked

Matches the observed repository HEAD

Yes

Scanner rules are current

No

Repository scan complete

No

Skill scan complete

Yes

Observed behavior

Not checked yet

Last checked

Nov 6, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

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