Control: Sean Payton
Variable: Organization
The Saints have had injury issues for a very long time and it's always an excuse. Sean has been in 2 different spots, and the injury results don't match each other. We don't know what conversations went on behind closed doors, etc, but it's hard to argue against the results in Denver 2 years in a row.
Also, what comes to mind is the misdiagnoses of players and Sean expecting them to be back on the field based on the diagnoses of the doctor, only to find that the injury is way worse than what they thought 3 months ago. This is stuff that sews mistrust with players and makes difficult your ability to attract free agents and build a roster.