LONDON (Reuters) - Are you the pilot or the wit in your circle of friends? The average man has six defined types of friends, according to a new report on male friendship, which says most men rely on the pilot, rock, explorer, wit, hero and coach for moral guidance and emotional support. "The Evolution of Friendship" report uses research and interviews with experts and academics alongside chats with groups of men in New York, Shanghai, London, Moscow and Mexico City to explore the dynamics of 21st century male friendship. ...