The interfaces should be easy to understand, learn, and efficient over time.

The ideal humane interface reduces the interface component of a user's work to pure habituation.

A well-designed human interface should not be split into beginner and expert modes. Instead, think of the interface as a beginner-to-expert journey.

The learning phase of working with any professional interface requires conscious attention. Simplicity, clarity of function, and the visibility of a user interface helps beginners learn.

The expert phase is characterized by fast unconscious use.

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According to Jef Raskin, qualities like suitedness to the task and modelessness lead the way for UI to be habitual.

Users shouldn’t have to get lost among multiple elements. There should be only one way to perform a task. Jef Raskin wrote, the more ‘monotonous’ an interface, the more quickly it becomes habitual.

Avoid alternate modes that can shift the user's attention. And if you have them, make sure they are distinctly marked.