====== Intuitive User Interface ======

Adapted from [[http://www.uxdesignedge.com/2010/06/intuitive-ui-what-the-heck-is-it/|UX Design Edge]].

  * **Affordance** - does the UI allow user to predict future state.
  * **Expectation** - are triggers labelled and/or adopt universal symbols (i.e. the right facing triangle for 'play')
  * **Efficiency** - the number of triggers needed to reach a desired state is the absolute minimum
  * **Responsiveness** - the UI provides instantaneous feedback on whether a trigger is being processed and/or a state has been changed.
  * **Forgiveness** - a user-induced error can be caught and corrected and/or undoned.
  * **Explorability** - (IMO not relevant to physical UI) users can navigate throughout the UI without unintended consequences, or of getting lost.