One thing I am constantly learning--genius is relative to a person's experiences to life. To a hustler, a genius is a person who can make the most money, in the quickest time, and without consequence. To a photographer, genius is seeing beauty through a lens, and being able to catch that genius at the perfect time, in the perfect light. To a musician, genius can be one chord that sticks out in the music or even a phrasing performed; a complicated melody or a simple riff. Point is, calling something or someone genius is relative--it's usually not universally accepted concept.
Most people think of genius as something that is accomplished, but rarely is it seen as the gift you were born with. On one level, I believe that each person is born with a gift that makes him or her a genius in their own right. However, we don't see it as such. We may even admit that the person is gifted, but we choose not to see it as genius that it is. Can we do what the "gifted" person does?--certainly. Can we do it as well?--probably not.
