Our readingWhat is a korrent?
Graphical interfaces have superior usability because they show people what can be done rather than requiring them to articulate what they want.
Drawn from what Jakob Nielsen said
Subjectdesign
What this subject means
design How things should be made and judged: what makes a design good, who should do the designing, and what an interface is for.
Mental modelAffordances and signifiers
On the topicWhat does the interface become when a model is on the other side?under our view: Chat is a terrible interface: a blank box has no affordances and leaves the work to the user On the topicWhich mental models should a designer think with?under our view: An interface must show what can be done: affordances, signifiers and a conceptual model