一、公共物品与私人物品的区分是“事业”存在的条件人类消费的物品千千万万,但根据消费方式的不同可以将其区分为两类:一类是私人物品,一类是公共物品。美国著名经济学家保罗·A·纱缪尔森给私人产品所下的定义是:“如果一种物品能够加以分割因而每一部分能够分别按竞争价格卖给不同的个人,而且对其他人没有产生外部效果的话,那么,这种物品就是私人物品”。从该定义看,私人物品至少具有以下 First, the distinction between public goods and personal belongings is “business ” Existence of conditions Human consumption of goods thousands, but according to the different ways of consumption can be divided into two categories: one is a personal belongings, one is Public goods. The definition of private product by Paul A. Leuchsen, the famous American economist, is: “If an item can be segmented, each part can be sold separately to different individuals at competitive prices, and not to others Produce external effects, then, this item is a personal item ”. From this definition, private goods have at least the following