Efficiency, Comparative Advantage, and Trading Tests

In many ways, the goal of economics is to produce goods and services in the most efficient way possible. I have always been a fan of efficiency; I like to do everything as quickly as possible yet of excellent quality. This brings me to think of high school and Geometry class. Everyone remembers Geometry test, a portion of the test was the filled with proofs and actual math, while a shorter but still significant portion was filled with definitions. DISCLAIMER: I NO LONGER USE THESE METHODS; I SWEAR I HAVE NEVER “CHEATED” SINCE. My friend sucked at geometry but could memorize definitions rather well (it was all she could do), I generally rock mathematics (AND yes I do know calculus very well even though I am in 01 and not 02), but at that point in life was too lazy to memorize the definitions word for word. So, we devised a plan: take a test, each do the part we are good at, trade, put your name on it, and complete that same half you just did. And this was EFFICIENT. However, one day the teacher gave two different versions of the test. My friend didn’t realize the differences and completely screwed herself over because she did not reread the questions, but simply rewrote the answers from the prior test. Anyways, we originally maximized our utility by sharing information through an efficient cheating method which would have never been found out had my friend not completely lacked common sense. This also brings the concept of absolute advantage; I had an absolute advantage in both aspects of geometry since I actually understood everything; however, my friend had a comparative advantage in definitions and I had a comparative advantage in proofs, etc. Therefore, we were both better off trading, literally trading tests  =)