#dancampbell and #benjohnson are having the same principle-ego-problem, which stands in their way when it is all about being smart. #gbvschi #4thdown #4thdownterritoryiseverywhere #nfl

The fourth down thing really has come pervasive. I'm not familiar with the model used, but there are some serious data issues. Selection and endogeneity are enormous problems that may not be accounted for. Admittedly some of these issues have gone away as more and more coaches go for it on 4th down, but still. https://www.wsj.com/sports/football/detroit-lions-fourth-down-super-bowl-9b1555d5?mod=hp_lead_pos8 #nfl #4thdown #econometrics