The document discusses principles of designing virtual interfaces and products. It emphasizes that interfaces should incorporate principles of usability, aesthetics and affordance to intuitively guide users. Designing with textures, art, realistic details or effects can help create engaging and realistic virtual experiences even with simple interfaces. The key is understanding how to design for usability while creating pleasant and inspiring digital environments.
21. ...the term affordance refers to the
perceived and actual properties of the
thing, primarily those fundamental
properties that determine just how
the thing could possibly be used.
Don Norman