An engineer failed to set the brakes on parked tanker cars which soon begin to roll of their own accord until, out of control, they skipped the tracks and exploded. His carelessness led to widespread death and destruction.
A truck driver became distracted by a problem with his trailer, failed to notice a stop sign, and sailed through an intersection at high speed, putting it immediately in the path of a fast-moving bus. His carelessness claimed the lives of many passengers and earned him a long sentence in prison.
Each of these people was called upon to account for his carelessness, for his neglect, and for all the devastation that came from it. And rightly so, for carelessness is no small matter. Carelessness is a moral issue that can have severe consequences.