The Design of Everyday Things & Signifiers
Don Norman · 1988
"Norman showed everyday errors are usually not user stupidity but design failures — objects must signal how to use them via signifiers, constraints, and feedback, not via labels and manuals."
Norman's bestseller is built on a doormat of complaints: doors you push when they say pull, stovetops where you burn the wrong burner — not bad users, bad signifiers.
Affordances are what an object can do; signifiers are the perceptible cue that communicates it. Good design makes the correct action discoverable without instruction by aligning signifier, constraint, mapping, and feedback — the handle's shape says pull, the flat plate says push. Norman's test: if a simple object needs a label, the signifier has failed.
What distinction does Norman insist on between affordances and signifiers?
Read more about the topic
The explanation above is written with AI assistance. These are the originals — go to them to check it.
- The Design of Everyday Things (1988)Donald Norman / Wikipedia
Dieter Rams' 10 Principles of Good Design
"Rams, Braun's chief designer, reduced good design to ten checks — innovative, useful, aesthetic, understandable, unobtrusive, honest, long-lasting, thorough, environmentally friendly, and as little design as possible — and applied them for decades to beat fashion cycles."