Comparative Advantage Even if a person or country is not best at making anything, they can still produce and prosper. … Mostly summarized from the Mankiw book: Suppose LeBron James can mow his lawn faster than anyone else. Should he mow his own lawn? James can mow his lawn in two hours. In that same two hours, he could film a television commercial for Nike and earn $50,000. … Dave, a boy who lives nearby, can mow James' lawn in four hours. In four hours, Dave could work at McDonald's and earn $60. James has an absolute advantage over Dave in mowing lawns because he can do the work in a smaller amount of time. But Dave has a comparative advantage in lawn mowing, because · James' opportunity cost of mowing the lawn is $50,000, not making the Nike commercial · Dave’s opportunity cost of mowing the lawn is $60, not working at McDonalds Rather than mowing his own lawn, James should make the commercial and hire Dave to mow the lawn. As long as James pays Dave more than $60 and...