"A common sense of doing Christian medical ethics or bioethics was available for Roman Catholics until the mid-1960s. As John Berkman observes, “The conceptual continuity in moral theology is clearly visible from the manuals themselves, which in 1950 maintained the same basic structure and categories of the manuals which begin in 1605.” There was a confidence in the ability of moral theological reflection to answer the questions posed by new technological and scientific developments."