Come on man, I really don't want to do a research project to prove a point for someone on a forum, that the law of diminishing returns works. I've graduated college, and am glad that I don't need to worry about such assignments anymore. This 2016 example, well one of the games you were talking about Zeek had a minimum amount of carries to get that nice YPC. The YPC thing is on a per game basis, high number of attempts in a game should increase the number of yards total but at the cost of YPC. a non extreme number of carries should result in an increase of YPC but at the cost of total yards in the game. Then you have the whole thing about that in some games you face good defenses and in other games you face bad defenses. The law of diminishing returns would still apply but obviously you get lower base YPC against a good defenses and higher base YPC against a bad defense.. This all tends to even out at the end of the season, because your sample size is bigger than just a few games, enough so that you can compare end of seasons YPC of one back versus another. But honestly, I don't see the benefit of arguing what is considered a "law" of logic in our society to someone, and doing an assignment comparing how the cowboys did against each defense compared to how other defenses did to them, making charts and graphs, just to prove that yes, the Law of Diminishing returns applies here. I mean it would be just like someone giving me an assignment on a forum because they don't believe in the Law of Relativity or such.