Principle of least suprise

Jump to navigation Jump to search

The principle of least suprise applies to software design, user interface design and ergonomics. It is alternatively referred to as the rule or law of least astonishment.

A textbook formulation is "People are part of the system. The design should match the user's experience, expectations, and mental models."[1]


  1. ^ Saltzer, J. H., Kaashoek, Frans, Principles of computer system design: an introduction, 2009, Morgan Kaufmann, ISBN 978-0-12-374957-4, page 85

External links