A principle is a flexible guideline that can help you to solve a problem you have never encountered before.
If you really understand the principles of physics, for instance, you can solve a new problem simply by working backward.
Principles can provide guidance and help you make sense of the world, even if they don’t articulate exactly how to solve a particular challenge.
All models are wrong, but some are useful.
- Good design (Dieter Rams)
- Small technology
- UX principles