Online research in philosophy

Crawford Elder’s Real Natures and Familiar Objects promises to give naturalistically inclined metaphysicians reason to accept an ontology that includes many common sense objects, including persons, organisms, and at least many artifacts, behaviors, customs, and so on. This is a brave book, running against the current of trends towards austerity in ontology, tackling centuries old problems about how modal facts may be empirically discovered, and defending a commonsense ontology from a strictly naturalistic approach rather than via traditional appeals to ordinary language or common sense.

Can our ordinary conception of macroscopic objects be transposed to the framework of relativity theory? According to common sense, ordinary objects cannot undergo radical variation in shape, whereas according to a compelling and widely accepted metaphysical picture of ordinary objects’ shapes in Minkowski spacetime, they do undergo such radical variation. This problem raises doubts about the compatibility of the ordinary conception and the relativistic conception of the world. I shall propose to reconcile common sense with relativistic metaphysics by viewing ordinary objects as doublelayered compounds of matter and form. The different layers permit different perspectives on the objects, the one perspective focusing on form and the other focusing on matter. This ontology allows the conception of common sense and the conception of relativistic metaphysics to manifest different and compatible perspectives on the same objects.

Ordinary objects are vague, because either (i) composition is restricted, or (ii) there really are no such objects (but we still want to talk about them), or (iii) because such objects are not metaphysically (independently of us) distinguishable from other 'extra-ordinary' objects. In any sense in which there are ordinary objects, they are vague.

The basic philosophical controversy regarding ordinary objects is: Do tables and chairs, sticks and stones, exist? This paper aims to do two things: first, to explain why how this can be a controversy at all, and second, to explain why this controversy has arisen so late in the history of philosophy. Section 1 begins by discussing why the 'obvious' sensory evidence in favor of ordinary objects is not taken to be decisive. It goes on to review the standard arguments against the existence of ordinary objects – including those based on problems with causal redundancy, parsimony, co-location, sorites arguments, and the special composition question. Section 2 goes on to address what it is about the contemporary approach to metaphysics that invites and sustains this kind of controversy, and helps make evident why debates about ordinary objects lead so readily to debates in metametaphysics about the nature of metaphysics itself.

In this paper we set out a Quinean approach to metaphysics. We evaluate Eli Hirsch's and Amie Thomasson's deflationary metaphysics and set out our metametaphysical framework.

Several prominent attacks on the objects of 'folk ontology' argue that these would be omitted from a scientific ontology, or would be 'rivals' of scientific objects for their claims to be efficacious, occupy space, be composed of parts, or possess a range of other properties. I examine causal redundancy and overdetermination arguments, 'nothing over and above' appeals, and arguments based on problems with collocation and with property additivity. I argue that these share a common problem: applying conjunctive principles to cases in which the claims conjoined are not analytically independent. This unified diagnosis provides a way of defending ordinary objects against these common objections, while also yielding warnings about certain uses of general conjunctive principles.

Arguments that ordinary inanimate objects such as tables and chairs, sticks and stones, simply do not exist have become increasingly common and increasingly prominent. Some are based on demands for parsimony or for a non-arbitrary answer to the special composition question; others arise from prohibitions against causal redundancy, ontological vagueness, or co-location; and others still come from worries that a common sense ontology would be a rival to a scientific one. Until now, little has been done to address these arguments in a unified and systematic way. Ordinary Objects is designed to fill this gap, demonstrating that the mistakes behind all of these superficially diverse eliminativist arguments may be traced to a common source. It aims to develop an ontology of ordinary objects subject to no such problems, providing perhaps the first sustained defense of a common sense ontology in two generations. The work done along the way addresses a number of major issues in philosophy of language and metaphysics, contributing to debates about analyticity, identity conditions, co-location and the grounding problem, vagueness, overdetermination, parsimony, and ontological commitment. In the end, the most important result of addressing these eliminativist arguments is not merely avoiding their conclusions; examining their failings also gives us reason to suspect that many apparent disputes in ontology are pseudo-debates. For it brings into question widely-held assumptions about which uses of metaphysical principles are appropriate, which metaphysical demands are answerable, and how we should go about addressing such fundamental questions as "What exists?". As a result, the work of Ordinary Objects promises to provide not only the route to a reflective understanding of our unreflective common-sense view, but also a better understanding of the proper methods and limits of metaphysics.

Several prominent attacks on the objects of 'folk ontology' argue that these would be omitted from a scientific ontology, or would be 'rivals' of scientific objects for their claims to be efficacious, occupy space, be composed of parts, or possess a range of other properties. I examine causal redundancy and overdetermination arguments, 'nothing over and above' appeals, and arguments based on problems with collocation and with property additivity. I argue that these share a common problem: applying conjunctive principles to cases in which the claims conjoined are not analytically independent. This unified diagnosis provides a way of defending ordinary objects against these common objections, while also yielding warnings about certain uses of general conjunctive principles.

Amie Thomasson has won well-deserved praise for her book, Ordinary Objects. She defends a commonsense world view and gives us “reason to think that there are fundamental particles, plants and animals, sticks and stones, tables and chairs, and even marriages and mortgages.” (p. 181) Ordinary objects comprise a vast array of things—natural objects both scientific and commonsensical, artifacts, organisms, abstract social objects.