I haven't figured out why Americans call that football.
Unfortunately, referee errors in football can be extremely costly because games are often decided by a single goal.
In basketball, for instance, an error by a referee may cost one or two points.
In football, an error may cost a goal or make a team play outnumbered for half a game.
Other professional sports such as basketball, rugby, futsal, and ice hockey have already evolved to deal with these situations.
It turned moral with the release of the video of Ray Rice knocking his fiancée cold in an elevator, with Greg Hardy awaiting his appeal on charges of domestic abuse, with the angry red stripes crossing the thighs of Adrian Peterson's four-year-old son, and with the unsurprising revelation that the Tallahassee police hadn't fully investigated the accusation that Jameis Winston had raped a Florida State student the season he won his Heisman Trophy and led the Seminoles to a national championship.
It wasn't enough that football endangered bodies; now it endangered the souls of those who played it, and even the game's climactic spectacle—a grand, cathartic Super Bowl—labored under accusations that Tom Brady and the New England Patriots had cheated in order to get there.
There is, however, another explanation for the persistence of our love affair with football, despite its dicey reputation and the moral costs of our patronage.
Indeed, far from defying explanation, football's continued popularity rests on an explanation so simple that it borders on simplistic: We tolerate what happens off the field because of what happens on the field.
Therefore, the rules are designed to punish harshly or barely punish at all.
This would not be such a big problem if rules were strongly enforced.