Final answer:
The law of comparative advantage indicates that Darryl should focus on assembling swing sets, where his advantage is greatest, and Trevon should concentrate on building picnic tables, where his relative disadvantage is smallest. By doing so, they both can maximize their total output and work more efficiently.
Step-by-step explanation:
The law of comparative advantage suggests that Darryl and Trevon should focus on producing the items that they are relatively better at making compared to each other. In this case, Darryl assembles swing sets three times faster than Trevon, which indicates a greater comparative advantage in this task than in building picnic tables, where his advantage is only twice as fast. On the other hand, Trevon would benefit from focusing on building picnic tables since his productivity disadvantage is less in this area compared to swing sets. By each focusing on the tasks where their productivity disadvantage is smallest, not only can they both increase total output but also potentially work more efficiently.
Comparing this scenario to the camping example, where Jethro had an absolute advantage in all tasks, we see that efficiency is maximized when individuals or parties allocate their time to activities where their relative productivity is highest. Similarly, in the case with Darryl and Trevon, the smart division of labor according to comparative advantage allows them to maximize their collective output of picnic tables and swing sets.