The Mekhilta presents a series of vivid scenarios involving accidental death, each illustrating the same legal principle. A man pulls a heavy roller up to a rooftop, and it slips from his grasp and falls on someone below, killing him. A man climbs a ladder, the ladder gives way, and it crashes down on a bystander. A man hauls a bucket up from a well, the rope snaps, and the falling bucket strikes and kills a person standing nearby.
In each of these cases, the death was unintentional. The man pulling the roller did not aim it at anyone. The man on the ladder did not push it onto the victim. The man at the well did not release the bucket deliberately. These are textbook cases of accidental killing.
Yet the Mekhilta rules that in none of these cases is the killer exiled to a city of refuge. Under Torah law, a person who kills accidentally is normally sent to a city of refuge, where he must remain until the death of the High Priest. Exile is the standard consequence for manslaughter. So why are these cases different?
The key is the direction of the fatal object's movement. In all three scenarios, the object fell downward onto the victim. The victim, in effect, came into the path of the falling object. The Mekhilta describes this with a cryptic phrase: "The witting one comes and falls by the hand of the unwitting one." The victim, who was aware and moving freely (the "witting one"), placed himself in the zone of danger. The killer, who was unaware of the victim's presence (the "unwitting one"), did not direct the harm. When the victim effectively enters the path of the danger rather than the danger being directed at the victim, the laws of exile do not apply.