It is absolutely fair, but is unclear at the expense of what nevertheless similar results are achieved.
Some researchers of this phenomenon (a number of the directions of the structurally-functional theory of genius) believe, the genius is a result of huge diligence, persistence, patience, determination and will power (the theory of efficiency).
The fact that this statement is not serious, is evident from the fact that it does not mention such mandatory properties of creativity, which are characteristic not only of geniuses, but simply for people of creative activity, for example, some endowment, sufficient level of intelligence, education, experience, aspiration to inspiration, etc.
There is also the consideration that at the heart of genius lies exorbitant passions, love for the world, for people, for own work, and an irresistible desire to learn the truth (the passionary theory).
All these properties, rather, can be attributed to the great opera singers, and not to geniuses of various kinds.
Other structuralists believe that a genius is a person with extraordinary intellectual power, exceptional and extraordinary mental abilities (the intellectualist theory).
All these remarkable signs are peculiar, for example, to outstanding chess players, who have nothing to do with obtaining extraordinary (non-obvious) knowledge, dealing only with a combinatorial mind game.
There is also a rather strange consideration regarding genius: it is based on a passionate desire to improve everything that exists and constantly follow the highest standards of excellence (the perfectionist theory).
Properties of this sort belong to all idealists, but idealists great multitude, though, of course, and geniuses are in some way idealists, since they largely neglect pragmatics.
Who only doesn’t show own rather limited ideas about genius?!
Here, there are also theorists relying on attribution, that is, being lumped together of all more or less clear signs of great persons, pointing herewith the extraordinary development of one of them.
Their definition of genius: phenomenality, limit and extreme level of development of abilities, domination and extraordinary development of one of the qualities or mental processes of a person.
To gain these remarkable properties can only, in their opinion, by increased attention, lively perception and impressionability, intuition (they do not define it in any way), unusual imagination and fantasy ideas, the ability to think well, great experience and perfect memory (apparently, poor geniuses should be regretted only as they are forced by that memory to remember all bad for them all rest of life).