Around the world, hearts were broken when news came that the conjoined Bijani twins had died on the operating table. Having lived in tortured unity for 29 years, they traveled from their native Iran to Singapore for the surgery meant to set them free. The doctors who performed it were devastated. When you lose a patient, particularly when the patient dies at your own hand, the heartbreak mixes with unbearable guilt. The doctors are asking themselves the same question everyone else is asking: Should they have done it?
The doctors certainly knew the risk. They knew that with the women's shared...