The Trolley Problem

Surface

A trolley is hurtling toward five people tied to the tracks. You can pull a lever to divert it to a side track, where one person is tied. Do you pull the lever? Most people say yes. Now: would you push a large man off a bridge to stop the trolley with his body and save the five? Most people say no. The math is identical. The moral intuition is not.

Middle

Philippa Foot introduced the trolley problem in 1967 to explore the difference between doing harm and allowing harm. The lever case feels like redirecting tragedy. The bridge case feels like using a person as a means to an end. Same outcome, different moral calculus, which suggests our ethics are not purely consequentialist.

Deep

The trolley problem does not have a correct answer. It is a machine for revealing the structure of moral intuition, the competing claims of consequentialism (outcomes matter most) and deontology (some actions are wrong regardless of outcomes). Every real ethical dilemma lives somewhere in this tension.