Affordances In Modern Web Design by Andrew Maier

Affordance The quality of an object allowing an action–relationship with an actor Signifier A discrete unit of meaning, including words, images, gestures, scents, tastes, textures, sounds. Should actions be buttons or links? It depends on the action. Should a calendar view be in listform or gridform? It depends where it’s being shown and how long the time period is. Does every global navigation link need to be on every page? Do you need a global search bar everywhere? Do you need the same exact footer on each page? Te answer: “It depends.”