? Throughout the twentieth century, major scientific and medical advances have greatly enhanced the life expectancy of the average person. However, there are many instances where doctors can preserve life artificially. In these cases where the patient suffers from a terminal disease or remains in a "persistent vegetative state" or PVS from which they cannot voice their wishes for continuation or termination of life, the question becomes whether or not the patient has the freedom to choose whether or not to prolong their life even though it m ....