To select a concept during early-stage conceptualizing by exploring a variety of different concepts.
It is throwaway prototyping and involves creating a paper representation of a digital artefact.
user, facilitator, observer
First think about the goal of your prototype and idea of what you’re trying to design and visualize what the user is expected to do. The next step is to create your tasks and finally create the prototypes. After developing the prototypes it is advised to test the prototypes by users.
lack of realism