Let's look at the facts: Fighting for the final wild card berth, there are three teams above the Cowboys (5-6) in the win column: Tampa Bay, Seattle, and Minnesota. Each one has a 6-5 record.
Next week, Tampa Bay plays at Denver, Seattle plays at Chicago, and Minnesota plays at Green Bay. There's an excellent chance that every one of these teams loses -- just like every one lost last week.
Meanwhile, the Cowboys play at home against a Philadelphia that has thrown in the towel on the season. If they win and the other three teams, there in a tie for the final wildcard spot.
The Cowboys would have just as much a chance of making the playoffs as those other teams.
And that's how Garrett should be judged.
"Many of the greatest things man has achieved are not the result of consciously directed thought, and still less the product of a deliberately coordinated effort of many individuals, but of a process in which the individual plays a part which he can never fully understand." - Friedrich Hayek