Menu

Individual skill

errors-mistakes

0upvotes

Use this skill when designing to prevent errors of intention — wrong actions taken because the user's model of the situation was wrong. Trigger when designing for ambiguous information, novel situations, complex decisions, or contexts where users may proceed with confidence based on a wrong understanding. Sub-aspect of `errors`; read that first.

plugins/HDeibler/universal-design-principles/plugins/interaction-and-control-principles/skills/errors-mistakes/SKILL.md

Read pinned source

Source commit d780783eba4ecc7c8b9429f95c9362df95f07c61

What was checked

Matches the observed repository HEAD
Yes
Scanner rules are current
No
Repository scan complete
No
Skill scan complete
No
Observed behavior
Not checked yet
Last checked
Nov 4, 2026

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

Install this skill

Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.

An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.

Repository context

Repository stars (not skill ratings)
1,539
Repository last updated
Nov 7, 2026
License
Apache-2.0

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

Browse files
Read excerpt

# Mistakes: errors of intention

A mistake happens when the user's action matched their intent — but the intent was wrong because their model of the situation was wrong. They misread an alarm; misjudged a chart; chose the wrong option from a menu they misunderstood. Unlike slips, mistakes are usually unrecognized at the moment they happen — the user is confident they're doing the right thing.

The design responses for mistakes work upstream of action: better information, clearer system state, training, conventions that match user expectations.

## The three mistake subtypes (from the book)

### Perception mistakes

Wrong action because of misread information.

**Design responses**:
- Improve situational awareness (clear, distinctive feedback).