Medically assisted procreation, prenatal diagnostic, organ transplants, genetic testing : all are part of the spectacular progress characteristic of scientific and medical research in the last few years. These new techniques confront us with totally new situations and oblige us to take responsabilities and make difficult choices. Should we do these things just because we can ? Who should decide what to do and on what criteria ? The individual or society ? Doctors or politicians ? This book invites us into a stimulating and incisive thought process concerning the future of medicine.