ü
ķ ʴ?
ķ䰳(Pareto improvement)̶ ȿ ϵ ¸ Ѵ. ķ ʿ ? б ټ ߴ. Ⱑ ʾ ӱݵ ߴ. δ ǰ ݱ ߴ. Ű̴ ڼü ڽ ϴ ߴ. ȸ ڵ鿡Դ α 30% ûߴ. ؼ ټ ҼԴ ȿ , ӱݵ ݱ, ڵ鿡Ը α ûϴ ͵ ķ䰳 Ѵ. ڼü ϴ , Ե Ƿ · ִ.