The marketer's task, therefore, is to manage this tension, this broken soul, this bifurcated core, this paradessence of a product or service.

Only those who give the countersign may enter the Masonic Lodge.

Briefly it may be stated: Operations come first; concepts follow; theory aims at developing concepts, from operations, plus a nomological network for those concepts, which explains the structure of the data obtained through those operations. And this does not exclude the theorist from doing some 'armchairing' in thinking about logically consistent models, their empirical pentialities, their assumptions and their implications; he may, and usually will, venture some possible empirical interpretations of a model, but in doing so he will carefully avoid any substantive (nonformal) pre-operational definition of a concept or construct.

On both the Gothland and the Öland Railway, a spanking railcar provides an alternative to riding in the wayward, steam-driven mixed train, but the latter is the proper conveyance for a real railway lover, even over the flat, limestone plains which form much of the Baltic island scenery.