Barbara Fried argues that designing theories about this thought experiment dooms them to “marginal significance” in a review of the book On What Matters. A book titled for this thought experiment's “mysteries” collects the 2013 Berkeley Tanner lectures of Frances Kamm. A paper that compares this thought experiment to examples involving the “Health-Pebble” and contrasts doing with merely (-5[1])(*) allowing was written by Judith Jarvis Thomson. This thought experiment was introduced in the paper Abortion and the Doctrine of Double Effect, by Philippa (10[1])Foot. The central action of this thought experiment, which has a “fat man” variant, is sometimes compared to (10[1])harvesting organs to save transplant patients. For 10 (10[1])points, name this thought experiment that asks if it is moral to kill one person to save five from a certain vehicle. ■END■