Unfortunately, many safety systems work like this: tradeoffs, not strict improvements. They locked the cabin doors to planes after 9/11 with a lock that can be

Unfortunately, many safety systems work like this: tradeoffs, not strict improvements. They locked the cabin doors to planes after 9/11 with a lock that can be sealed from the cockpit. Which is great until the pilot takes a restroom break and the co-pilot decides this is the day he's going out and taking everyone with him...