The misattribution of errors is one reason we fail to learn from our mistakes: we haven’t understood their root causes.
Rather than being content to simply treat the injuries, doctors asked a more unnerving question: Why had so many injuries occurred? It turns out that young soldiers weren’t wearing their protective goggles—they were too ugly. So the military switched to cooler-looking ballistic eyewear. The soldiers wore the glasses more often, and eye injury rates dropped immediately.