Killing someone as a means to an end is not the same as failing to save

The argument

Proponents of this answer insist on a distinction the arithmetic of the dilemma obscures: there is a moral difference between killing a person and allowing a person to die. The one who diverts the trolley does not merely fail to prevent deaths; they select a human being who was in no danger and route lethal force through him, using his body as the instrument by which others are saved. The one who refrains is responsible for not intervening, which is a lesser charge than homicide. On this view the victim's standing is what matters. The single person on the other track has done nothing, consented to nothing and was not part of the situation until someone put him in it. To pull the lever is to decide that his life may be spent for a purpose he never agreed to serve, which treats him as material rather than as a person. Proponents argue that this is precisely the kind of act morality exists to prohibit, and that a prohibition which dissolves whenever the numbers are favourable is not a prohibition at all. Proponents accept that the outcome they endorse is worse by a body count, and deny that body count settles it. If it did, they argue, the same reasoning would licence harvesting one unwilling patient's organs to save several others, a conclusion almost everyone rejects — which shows that most people already hold killing to be constrained by something other than totals. The trolley case is the same structure with the horror stripped away by distance and a lever. Because deliberately killing an uninvolved person as the means to saving others is a wrong of a different kind from failing to intervene, this argument concludes, one should not divert the trolley.

Premises

Counter-arguments

Those who would divert the trolley reply that the distinction cannot bear this weight when the agent foresees both outcomes and determines which occurs. Declining to touch the lever is a decision to let the trolley run, and in comparable cases — a lifeguard, a doctor, a signalman — failing to prevent a foreseen death is treated as culpable rather than neutral. They add that the refusal purchases the agent's own moral cleanliness with other people's lives, which inverts the point of morality.

Rejecting the premises

[Rejecting P1] Describing the death as the means overstates what diverting does. The bystander redirects a threat that is already running, and the death is a foreseen consequence of the diversion rather than the mechanism by which the others are saved, which is the very distinction the premise relies on elsewhere. [Rejecting P2] That killing is graver than failing to save is the principle in dispute, asserted here as a premise. The opposing case holds that an agent who determines which deaths occur is answerable for the outcome either way, and the premise does not engage it. [Rejecting P3] The unwilling donor differs in that the victim is not already exposed to the threat and that a standing practice of taking organs would leave everyone unsafe. Since the cases can be distinguished, the shared judgement about the donor does not show that the prohibition must be absolute.