So for those of you who still want to continue before V1..
ah .. but one still has the little problem of lining up the black and white of the idealised and repeatable certification animal with the sometimes quite different real world beast.
As the aviation world is moving these days .. one needs an holistic risk minimisation approach to one's decision making .. most of the time the real world matches the ideal sufficiently (or with sufficient margin) that the decision is programmed and easy .. sometimes it is not quite so simple as overlaying the real with the ideal.