For me, the prisoner's dilemma is tested and proved here with facts and data.
There are 2 people, Person A and Person B.

• Person A : Greedy and selfish but totally legal ( not fair ) according to the system. Posts 10 times a day with discussable content and self-upvotes all his posts with maximum power. Consumes %6 of the reward pool alone with approximately 3000SBD. If he didn' exist, everyone's income should be theoretically higher by %6.

• Person B : Rejects this situation, knowing that if Person A is stopped, everyone's income should increase by %6 including his.

With above conditions, the game starts.
Person B requests Person A to decrease the number of his posts to 4 times a day which should mean %60 decrease in Person A's income.
Person A rejects this and Person B starts downvoting Person A stripping approximately %20 of his income back to the reward pool. ( 600 SBD )
The pay-out table of this game is as below :

As you can see, there exists a much better solution for both parties ( reject-not flag ) but the parties, trying to maximize their income, applies the non-ideal solution.

I have written a more detailed post on the reward pool and flag wars.

I am really happy when I find intelligence on this planet.

FD.