Because products must accommodate ranges of user behavior, attitudes and aptitudes, designers must identify a persona set associated with any given product. Multiple personas carve up ranges of behavior into discrete clusters.

• 因为人物角色必须在一定范围描述用户行为、态度及能力，所以设计师必须定义出与任一给定产品相关的人物角色集合，多个人物角色将连续的行为范围变为离散的行为聚集。