The article discusses specific features of an interdisciplinary research and two strategies for introducing and constructing the objects of this research (an ontological and a constructivist strategy). The first strategy, which comes from Parmenides and Aristotle, is claimed to make a homogenous ontology a foundation ofthe process of the object construction. The second strategy, which comes from Plato, is based on the idea that the construction of an object is done by a thinking individual. Monodisciplinary research (as a part of (...) interdisciplinary research) is characterized by a construction of idealized objects which cannot fully meet the requirement of a certain type of science. This is why it is hard to say what kind of science these objects belong to. The second feature of interdisciplinary research has to do with the interrelatedness of monodisciplinary studies. Monodisciplinary studies create the starting conditions for each other. The author argues that if the distinction between the two strategies is accepted, then a thorough reconsideration of ultimate ontologies (such as "rhizome", "complicatedness", "self-developing systems") is called for. The last part of the article is devoted to an analysis of the epistemic criteria of knowledge it interdisciplinary studies, its truthfulness and effectiveness. (shrink)