Actually most geniuses do have a problem of communicating their ideas in a way that "normal" people can understand. Do some research. There are loads and loads of people that have failed in history to communicate their ideas clearly. That's why some other people are required to act as an intermediary between the geniuses and the normal folks. One example is Steve Jobs. He took Steve Wozniak's idea and made it into a giant of a company called Apple.
RE: Why Geniuses Are Often Misunderstood