Picking an ontology has wide-ranging significance, relative to questions of material constitution, composition, part-whole relations, properties, and relations in architecture, as well as the character of architectural notation, language, cognition, or behavior; there are also ramifications for simplicity and complexity, and the nature of ornament, proportion, context, and style. In architectural practice, the ontology of choice also colors perspectives on such matters as intellectual property rights, collaborative work, and preservation of architectural structures. 