Google Glass is a good example of a bad design fiction. Google Glass is an ugly hideous uncomfortable object that we don't want to have in our lives. So the only way you can sell it is by saying that your business is important and everyone else is just a pleb in the system.
What if? ... Then what? : Laugh. Ah-hah. But so what? What happens next?
How do you measure success? : Well did it change the world? Does it work as a chair?
http://www.lighthouse.org.uk/