Guns versus butter model
(重定向自Guns and Butter)

In macroeconomics, the guns versus butter model is an example of a simple production–possibility frontier. It demonstrates the relationship between a nation's investment in defense and civilian goods. In this example, a nation has to choose between two options when spending its finite resources. It may buy either guns (invest in defense/military) or butter (invest in production of goods), or a combination of both. This may be seen as an analogy for choices between defense and civilian spending in more complex economies.