James Watson: Genetic knowledge has predictive power, and sometimes it’s statistical. “You have an increased probability of coming down with cancer.” In the case of cystic fibrosis, if you have the gene, and you’ve got both copies bad, you’re going to have the disease. You’ll essentially know it soon after you’re born. This knowledge, particularly the predictive part of it, should be tightly controlled and probably should only be obtained when you can do something with the knowledge. It shouldn’t just be obtained because you want to see the future; it should be obtained because you want to make the future better.