A good digital prototype convinces us of its reality and compels us to make it real. It is an imaginative piece of visual fiction that excites our interest and sates our needs.  It does not exist, but we want to it to exist. It has not been made, but we are eager for its production.  If you have succeeded at proposing an engaging idea, we want to check our accounts to find a way to afford it, our maps to figure out a way to visit it, or an encyclopedia for its nearest substitute. 

A good digital prototype is a proof of concept so convincing that we want t it to be real. As project stakeholders, we are willing to invest money and resources into it. We are so excited by its potential reality that we are willing to takes risks to make it work.  It is not merely an illustration; it is a perfect fiction to which we excitedly subscribe.  Much like the digital prototype in engineering, it is plausible, not merely possible. It is proof of a possibility, illustrative of the probable wonder in a previously unpresented solution. 

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