ESPN linked to this piece by Posnanski on Bill James. Bill James doesn't have nice things to say about WAR. http://sportsworld.nbcsports.com/bill-james-statistical-revolution/ “Well, my math skills are limited and my data-processing skills are essentially nonexistent. The younger guys are way, way beyond me in those areas. I’m fine with that, and I don’t struggle against it, and I hope that I don’t deny them credit for what they can do that I can’t. But because that is true, I ASSUMED that these were complex, nuanced, sophisticated systems. I never really looked; I just assumed that the details were out of my depth. But sometime in the last year I was doing some research that relied on these WAR systems, so I took a look at them, and … they’re not very impressive. They’re not well thought through; they haven’t made a convincing effort to address many of the inherent difficulties that the undertaking presents. They tend to get so far into the data, throw up their arms and make a wild guess. I don’t know if I’m going to get the time to do better of it, or if it will be left to others, but … we’re not at anything like an end point here. I assumed that these systems were a lot better than they actually are.” A few years ago, Posnanski also noted that the A's internal WAR system ranked Cabrera ahead of Trout. (Although I don't have the link for that, sorry). I know a lot of us have used WAR as a crutch to evaluate players and performance. But perhaps we should show a healthier skepticism toward it?