From what I've seen/read, the more people are responsible for monitoring something, the less likely each one is to monitor it, sometimes to the point where more

From what I've seen/read, the more people are responsible for monitoring something, the less likely each one is to monitor it, sometimes to the point where more monitors can get a worse rate of catching problems. Sort of like why the driver of a "self-driving" car is more likely to watch TV instead of paying attention to the road.