The world is a better place because of Genius people, they  display exceptional intellectual ability, 
Very true. Who is your favorite genius? I would say Albert Einstein because he had so many important discoveries.
They only problem is that they have to specialize and narrow they efforts, though there are alot of scholars around the world,  yet many geniuses have shown high achievements in only a single kind of activity.
Ok, but who do you think is an important genius? Stephen Hawking is another one on the top of my list!
I agree about Stephen Hawking, they are usually associated with talent, but many authors (for example Cesare Lombroso) systematically distinguish these terms. 
Hmm, I don't know Lombroso's work. What is the best measurement of genius? An IQ test?
into being, create, produce". Because the achievements of exceptional individuals seemed to indicate the presence of a particularly powerful "genius", by the time of Augustus, the word began to acquire its secondary meaning of "inspiration, talent". The term "genius" acquired its modern sense in the eighteenth century, and is a conflation of two Latin terms: "genius", as above, and "Ingenium", a related noun referring to our innate dispositions, talents, and inborn nature. Beginning to
Genius
A genius is a person who displays exceptional intellectual ability, creative productivity, universality in genres or originality, typically to a degree that is associated with the achievement of new advances in a domain of knowledge. Despite the presence of scholars in many subjects throughout history, many geniuses have shown high achievements in only a single kind of activity.
There is no scientifically precise definition of a genius, and the question of whether the notion itself has any real meaning has long been a subject of debate, although psychologists are