> In order to leverage comparative advantage, an economy would need to know how good they would be at producing every possible good. Maybe I'm not getting what

> In order to leverage comparative advantage, an economy would need to know how good they would be at producing every possible good. Maybe I'm not getting what you're saying, but I don't think so. The point of comparative advantage is that even if country A is better at making guns and butter than B, A is better off only making guns or butter and trading to B for the other.