Guns versus butter model
（重定向自Guns and Butter）
![The production possibilities frontier for guns versus butter. Points like X are impossible to achieve, while the barely achievable B, C, and D illustrate the tradeoff between guns and butter: at these levels of production, producing more of one requires producing less of the other.](/Images/godic/202501/16/Production_Possibilities_Frontier_Curve.svg3848.png")
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.
微波背景辐射