source: □ □
destination: [□] □
spec: Then the medium or list is developed so that it can be tested to determine which would be the lowest cost medium or list in which to advertise that product . This is our invariable position . Our concern is with religion , not more generally with culture , and our approach to religious symbols , both in themselves and as expanded into ritual and myth , is more phenomenological than determinist . Thus , although specific age cut-offs are used for statistical convenience in most discussions of population ageing , it should be kept in mind that the underlying concern is with ageing , rather than with a specific age . The highlight of the meal is the condiments , not the dog . Now , if this abstract sketch is correct , it must follow that in political science our essential concern is with government , and only then with the politics of a given collectivity . My concern is with anti-natalism , and the pervasive attitude and frame of mind in reference . A well-written vacancy announcement is essential to a successful search . Quality is key to software performance , whether the concern is with function , usability , reliability , security , or anything else .