Many people have a moral objection to allowing the sale and purchase of body parts. I have no problem with that. But what an exercise like this does is force students to make explicit what the costs of their beliefs are. For example, if 60,000 people remain on the kidney donation waiting list each year, and each of these expects to die within 5 years, then holding the moral view of making kidney sales illegal is coming at a cost of pain and suffering and the ultimate death of AT LEAST this many people. Furthermore, we know that a recent...