...users and nonexcludable. The benefits of a good are nonrival when one agent's consumption of a unit of the good does not detract, in the least, from the consumption opportunities still available for others from that same unit. A peacekeeping mission that keeps warring sides apart brings stability...

...pure publicness. Pure Public Goods If the good's benefits are both nonrival and nonexcludable, then the good is a pure public good. A good's benefits are nonrival among users when one agent's consumption or use of the good does not detract, in the slightest, from...