[andybak]

A strategy that could beat tit-for-tat consistently was discovered* but tit-for-tat is still fascinating because it is incredibly simple and is almost the optimal strategy.

( * I think it's this: https://sciencehouse.wordpress.com/2012/09/04/a-new-strategy... )

[Ninjalicious]

People get mad when you don't read the article.

[saycheese]

(People get mad when you say you didn't read the article, especially in the first sentence; that is they read that, downvote, and don't read the comment.)