. . . when your response to the umpteenth Internet complaint about the simplicity of 13th Age's Barbarian, Ranger, and Paladin classes is to note that people seemed to get along just fine playing even less complex Barbarians, Rangers, and Paladins in AD&D.
(For me, the meat of 13th Age are the One Unique Things, Icon Relationships, and Backgrounds. The various class-specific Talents and the like are secondary to my fun.)