State
State is part of the screen
- Default state is only one version of a screen.
- Loading, empty, error, and success states change user trust.
- State notes help designers, developers, and testers see missing behavior.
Quality lens
DefaultWhat the user sees in the normal case.
LoadingWhat appears while information is being prepared.
EmptyWhat appears when there is nothing useful to show.
ErrorWhat appears when something fails and how to recover.