what is meant by a prima facie obligation
Prima facie The phrase is also used in academic philosophy. Among its most notable uses is in the theory of ethics first proposed by W. D. Ross, often called the Ethic of Prima Facie Duties, as well as in epistemology, as used, for example, by Robert Audi. It is generally used in reference to an obligation. "I have a prima facie obligation to keep my promise and meet my friend" means that I am under an obligation, but this may yield to a more pressing duty. A more modern usage prefers the title pro tanto obligation: an obligation that may be later overruled by another more pressing one; it exists only pro tempore.
Papal primacy Because of its association with the supposed position of Peter among the Apostles, the function that, within the Roman Catholic Church, is exercised by the Bishop of Rome among the bishops as a whole is referred to as the Petrine function, and is generally believed to be of divine institution, in the sense that the historical and sociological factors that influenced its development are seen as guided by the Holy Spirit. Not all Roman Catholic theologians see a special providential providence as responsible for the result, but most see the papacy, regardless of its origin, as now essential to the Church's structure.[36]