Usability Heuristics · heuristic
Help & Documentation
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Nielsen's H10: the best systems need no explanation, but when help is needed it must be easy to search, focused on the user's task, list concrete steps, and stay short. Help that lives where the confusion happens beats any manual; and wrong or stale documentation is worse than none, because users trust it straight into bugs.
Where it comes from
IKEA's wordless assembly manuals — refined since the 1956 flat-pack — walk millions through furniture assembly with numbered pictures and zero language, because IKEA learned that help must match the task, the moment, and the reader's patience. Compare the 200-page appliance manual nobody opens: same intent, opposite design. H10 is the difference between the two, applied to software.
Origin: The IKEA wordless assembly manual
In the wild
- Inline '?' expanders
Tax-filing apps explain '80C' beside the field asking about it — help at the moment of need, invisible until doubted.
- Interactive API docs
A 'try it' console on every endpoint turns reading into doing — the fastest kind of learning.
- Error screens that ARE the help
Appliance apps that decode their own error codes with photo fix-its close the loop no helpline can.
Further reading
Don't just read it — feel it.
Play the 3-minute game and let your own reactions prove the law.
Play the lesson