# Design Philosophy

The elementary OS HIG isn't just about a set of concrete rules; it's meant to be flexible and extensible. As such, this very first portion of the guideline is all about the guiding philosophies we employ.

For a quick design crash course, we like ["The User is Drunk" on YouTube](https://www.youtube.com/watch?v=r2CbbBLVaPk):

{% embed url="<https://www.youtube.com/watch?v=r2CbbBLVaPk>" %}

Read on for our four guiding philosophies.