Although clichéd, let us consider the example of the best student of the mythological story, Mahabharata. During archery practice, arranging a target on the tree top, Guru Dronacharya asked his disciples, what they were able to see on the tree.
While some saw the bird, few others could see the head of the bird. However, Arjuna was the only student who could see the eye of the bird and pierce the target with just one shot of an arrow, implying that Arjuna was the only student who was focused in the group.