Abstract

When we take a close look at a potentially interesting re ‐ search object, we always realize that it is part of a web of symbiotic relationships. It is impossible to investigate all these relationships simultaneously. In order to conduct me ‐ aningful studies, we have to isolate one, or a few, features of the phenomenon at a time. From there, we can add such new knowledge to the already accumulated knowledge of the phenomenon, which in turn may lead to better insights into the web of relationships as a whole.