Skip to content
UX Atlas
Plate TERM·120 · TermGrid C5 · Rev. 2026-08-14

Edge Case

An unusual situation that still happens to real people.

TermCraft conventionFoundational

Definition

A situation at the boundary of expected input or conditions, which is frequently common in practice.

Craft convention. True because the industry converged on it. Breaking it costs familiarity, not correctness.

On this plate
  1. 1Definition
  2. 2Local chart
  3. 3Continue from here

In plain language

An unusual situation that still happens to real people.

Example

A single-word name, a thousand-item list, a source that has never synced.

Local chart

TERM·120 · Region X · Grid C5

This entry and the entries it is stated to connect with. Each line is labelled with what the connection means.

Each link says what the connection is, so you can tell a principle from an alternative from a thing people mix this up with.

Deeper reading

The full entry behind this definition.

Nearby in the Atlas

Adjacent territory, found through shared tags rather than a stated link.