A man can not be more than one place at the same time, but he has a friend he can get things done through him instead of doing them himself. If a man dies without fulfilling some desire, a friend can continue to make efforts to achieve that desire. A friend performs many offices for a man, such as praising him. A friend can suitably act in a situation which proves embarrassing to a man. A man may be hampered in a situation because he has to deal with close relatives. A friend working on his behalf, is free of such personal considerations.