A man of power, for example, often has dirty work that has to be done, but for the sake of appearances it is generally preferable to have other people do it for him; friends often do this the best, since their affection for him makes them willing to take chances. Also, if your plans go awry for some reason, you can use a friend as a convenient scapegoat. This “fall of the favorite” was a trick often used by kings and sovereigns: They would let their closest friend at court take the fall for a mistake,

