1.   It is quite possible that that arrangement is the one that is most conducive to the public good.

2.   So a private sector agent will only provide a public good if his private benefits exceed the costs of producing the good.

3.   To illustrate this, we modify the model and suppose that the public good is an alternative to a private good.

4.   We sum vertically at a given quantity because everyone consumes the same quantity of a public good by definition.

5.   Politicians dress up their ruthless ambition as a pursuit of the public good.

6.   The funds are to be used to further the public good.

7.   Here the marginal utilities of the public good are the same but the marginal utilities of income are different.

8.   A local public good is to be provided in each locality and the cost is to be shared equally by residents.

9.   The marginal costs of providing this particular public good are assumed to be constant.