What kind of joke is two shits explaining GDP?

Two smart and talented young economists often argue about some profound economic theories. One day after dinner, I went for a walk, and two excellent young people argued again for the proof of a mathematical model. When they were having a tense game, they suddenly found a pile of shit on the grass in front of them.

A said to B, I am willing to pay 50 million yuan if you can eat. The temptation of 50 million is not small. Do you want to eat or not? B took out a pen and paper, made an accurate mathematical calculation, and soon got the optimal solution in economics: eat! So A lost 50 million yuan. Of course, it is not easy to add meals to B.

As they walked on, they suddenly found a pile of shit. At this time, B began to feel severe nausea, and A felt a little distressed and just spent 50 million yuan. So b said, you eat, I'll give you 50 million. So, different calculation methods, the same calculation result-eat! A contentedly recovered 50 million yuan, while B seemed to find a little psychological balance.

But suddenly, the geniuses wailed at the same time: we didn't get anything for a long time, but we ate two piles of shit for nothing! They couldn't figure it out, so they had to ask their tutor, a famous economist, to explain.

After listening to the stories of two tall men, I didn't expect the hero to cry. Finally, when my mood stabilized a little, I saw the master trembling and erect a finger, and said with great excitement, "1 100 million!" " 1 billion! Dear students, I thank you on behalf of the motherland and the people. You just ate two piles of shit and contributed 1 100 million to the national GDP! "