Our understanding of people is relative to the context we find ourselves in and often limited to it. It's a basic cognitive bias. In web design, the context is usually the interface and our understanding of the people interacting with it is described by usability metrics. Nonetheless, a UX designer's understanding of people needs to go beyond the context of user analytics and usability metrics.

In this article we are going to talk about 3 essential non-design principles that designers need to be aware of when creating interfaces that are meant to be compelling and accessible at the same time.