You wake up plugged into a famous violinist's kidneys — do you have to stay?

Philosopher Judith Jarvis Thomson imagined waking up surgically connected to an unconscious violinist whose survival depends on your kidneys for nine months, after being kidnapped for the purpose. Most people feel you'd be generous to stay, but not obligated to, even though unplugging kills him. Thomson used this to argue that a fetus having a right to life doesn't automatically give it a right to use someone else's body, reshaping how philosophers frame the abortion debate.

— Judith Jarvis Thomson, A Defense of Abortion — Philosophy & Public Affairs, 1971