##  [Principle of Least Astonishment](/principle-least-astonishment) 

  ##  [Principle of Least Astonishment](https://natural.quantumdictionary.io/principle-least-astonishment-0) 

  

 [![Natural & Formal Sciences Dictionary](/sites/default/files/styles/large/public/2026-01/Natural%20%26%20Formal%20Sciences.png.webp?itok=2kCDRVQv)](/topic-specific-dictionaries/natural-formal-sciences)



**Natural & Formal Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A usability and design principle asserting that software and interfaces should behave in ways that least surprise users by aligning behavior with established expectations and conventions for the target audience.