Metaphysicians of composite objects commonly distinguish two types of composite objects: wholes and sums. The former can survive some changes of parts, while the latter cannot. This paper investigates how the distinction between wholes and sums can be respected, while denying that a sum is an individual composite object. In particular, the view presented here identifies wholes with the fusions of (extensional) mereology – hence going against a common tendency to identify sums with mereological fusions – and identifies sums with (...) the pluralities of plural logic. It is argued that this view better captures the ideas behind the whole/sum-distinction while also avoiding various challenges the other accounts face. (shrink)

This paper addresses the question of what constitutes an apt interpreted model for the purpose of analyzing causation. I first collect universally adopted aptness principles into a basic account, flagging open questions and choice points along the way. I then explore various additional aptness principles that have been proposed in the literature but have not been widely adopted, the motivations behind their proposals, and the concerns with each that stand in the way of universal adoption. I conclude that the remaining (...) work of articulating aptness for a SEM analysis of causation is tied up with issues to do with modality, ontology, and mereology. Continuing this work is therefore likely to shed light on the relationship between these areas and causation more generally. (shrink)

This paper explores the Persistence Question about cities, that is, what is necessary and sufficient for two cities existing at different times to be numerically identical. We first show that we can possibly put an end to the existence of a city in a number of ways other than by physically destroying it, which reveals the metaphysics of cities to be partly different from that of ordinary objects. Then we focus in particular on the commonly perceived vulnerability of cities to (...) imaginary relocation; and we make the hypothesis that cities do have among their essential properties that of being surrounded by a specific geographical context. Finally we investigate the pos- sibility that a city can survive relocation in virtue of the capacity of its geographical context to survive it in the first place. We suggest that city contexts may not be essentially context-dependent in turn, and outline a possible description of the cri- teria for their persistence over time. (shrink)

Este trabajo realiza un estudio metafísico sobre la noción de contacto en términos de límites a partir de una ontología de objetos materiales. Dos cosas están en contacto cuando sus límites (o partes de ellos) se topan espacialmente. Las tesis relacionista y la substantivista sobre la naturaleza del espacio son evaluadas en sus compromisos respecto a la idea de contacto. Sin embargo, puesto que considerando algunos descubrimientos de la física cuántica es posible descartar la idea de contacto físico, la discusión (...) requiere ser trasladada a un espacio topológicamente continuo. Aquí la idea de contacto requiere solucionar la compatibilidad entre la existencia de un espacio continuo y la existencia de límites como un tipo de discontinuidad. Cuatro tesis son evaluadas: clásica, superposición, brecha, y coincidencia. Esta última es defendida puesto que, a diferencia de las otras, no renuncia a características ontológicas fundamentales de un límite y es la menos arbitraria sobre su pertenencia. (shrink)

Since Peter van Inwagen in his book Material Beings raised The Special Composition Question, many lines have been written about the conditions for two or more material objects to compose a further object. This paper proposes a study of the relationship between composition and the notion of boundary. The question about composition entails drawing a boundary to determine when it occurs and when it does not. There are three traditional answers: restrictivism, universalism, and nihilism. While according to restrictivism, composition occurs (...) occasionally, according to universalism and nihilism, it occurs either always or never respectively. Nonetheless, despite the opposition of these two answers, both have a common target: to avoid the existence of ontologically vague boundaries for material composition. Thus, how a boundary is drawn will determinewhat kind of things we accept as components of the world. (shrink)