Typically, countries that are bad at running a post office are also bad at running other organizations. But it does not follow that if a country wants to improve government effectiveness it should focus on returning wrongly addressed letters promptly.
通常，在邮政系统低劣的国家其他组织也低劣。但这并不是说，如果一国向盖上政府效率，就应该专注于迅速地退回地址错误的信件。