Intuition:

Intelligence - A New Look, Hans J. Eysenck:

"Some people (the plodders) require to look at all or most of the cues; your intuitive person takes a leap at the solution after only receiving a few cues."

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Genius - Hans J. Eysenck:

"To link intuition with exactitude, correctness, precision or truth would be a mistake; intuition can be as wrong, treacherous, mistaken and erroneous as logical thinking; it is no guarantee of truth. The adjective 'intuitive' refers to the method of arriving at a conclusion; not any property of the conclusion itself. Intuition is the basis of the 'aha!' experience, but how many 'ahas' have had to be retracted?"