Most linguistic theories assume that each grammatical relation is established in a unique structural configuration. Neeleman and Weerman take issue with this view, arguing for a more flexible approach on the basis of conceptual considerations and data taken mostly, but not exclusively, from the Germanic languages. In-depth analyses of word order phenomena as well as diachronic and typological generalizations motivate a re-evaluation of the role of case in the projection of arguments. Case is shown to provide a syntactic foothold for thematic interpretation, something which is necessary in a grammar that does not allow fixed theta-positions. Thus, this study does not only offer a genuine alternative to many standard assumptions, it also explains why there should be such a thing as case in natural language.Most linguistic theories assume that each grammatical relation is established in a unique structural configuration. Neeleman and Weerman take issue with this view, arguing for a more flexible approach on the basis of conceptual considerations and data taken mostly, but not exclusively, from the Germanic languages. In-depth analyses of word order phenomena as well as diachronic and typological generalizations motivate a re-evaluation of the role of case in the projection of arguments. Case is shown to provide a syntactic foothold for thematic interpretation, something which is necessary in a grammar that does not allow fixed theta-positions. Thus, this study does not only offer a genuine alternative to many standard assumptions, it also explains why there should be such a thing as case in natural language.1: Prologue.- 1. Introduction.- 2. Case Theory.- 3. ?-Theory.- 4. Word Order.- 5. Overview.- Bibliographical Note.- 2: The OV/VO Parameter.- 1. Introduction.- 2. The Domain of ?-role Assignment.- 3. The Domains of Head Government.- 4. The Formation of VP Shells.- 5. Particles.- 6. Scrambling.- 7. Double Object Constructions.- 8. Exceptional Caslóä