"Of Mice and Men" :: How does Steinbeck's repetition of questions regarding George and Lennie traveling together reveal something about other characters on the ranch such as "The Boss", "Curley", and "Slim"?

 George and Lennie are unique because they travel together. They are loyal and, although have spats, love each other. All the other men on the ranch are missing this. They exist in relative isolation. This makes them feels negative emotions (sadness, loneliness, anger, frustration....) more acutely than George and Lennie.