What is the difference between visibility and feedback?
Visibility is proactive system status display; feedback is reactive confirmation after action.
Why are constraints important?
They prevent user errors and reduce overwhelm.
What is false affordance?
When something looks interactive but isn’t.
Why is consistency important?
It reduces cognitive load and improves recognition.
What is mapping?
The relationship between controls and their effects.
Which heuristic helps users recover from mistakes?
Help users recognise, diagnose, and recover from errors.