[fsckboy]

the principle of comparative advantage does not ever fall flat on it's face. An entire country can be worse at manufacturing/growing everything compared to the US, but they can still manufacture and grow things, and engage in trade.

an individual can be inferior to other individuals at every single job skill, but can still get a job and live a full life with family.

you don't know what you are talking about, at all.

[Starman_Jones]

Yes, that is a description of comparative advantage. You must ask yourself this, though: why can a country be worse at manufacturing/growing yet still trade with the US? The answer is, of course, opportunity cost, as I said above. And, as above, then you must ask yourself what would happen to comparative advantage if there were no opportunity cost?