People who are highly intelligent typically see the world differently. Their world view differs from those who have average IQs. They have different perceptions because they think outside of the box. Because of this, they act differently. Highly intelligent people also tend to approach situations in a different way than most.
Just like any other thing in this world, scientists have studied people with high IQs. They discovered that the higher a person's IQ is, the less concerned they are about everyday things. On average, people are always occupied and preoccupied with details of everyday life. Such details are etiquette, being organized, following schedules, and other things. Intelligent people think differently so they don't bother with such details.