When we say prototype, are we saying visualization? Most of the time the answer is yes. I think there are 3 types of prototypes at 3 different places within a process.
1. Interactive Concept - Reality = 0%
- To show proof of concept
- Lots of ideas, need to visualize to see what works
- Very thin and quick to create
- Sales tool to sell an idea
- Early concept phase
2. Design Validation - Reality = 50%
- To allow user feedback
- Many ideas narrowed to one or a few
- End of concept or start of design phase
3. Pre-production - Reality = 99%
- Technical foundation leading into implementation
- Maybe an evolution of an early prototype, maybe not
- End of design phase before implementation