Abstract: This article examines questions connected with the two features of Locke’s intellectual landscape that are most salient for understanding his philosophy of science: (1) the profound shift underway in disciplinary boundaries, in methodological approaches to understanding the natural world, and in conceptions of induction and scientific knowledge; and (2) the dominant scientific theory of his day, the corpuscular hypothesis. Following the introduction, section 2 addresses questions connected to changing conceptions of scientific knowledge. What does Locke take science (scientia) and scientific knowledge to be generally, why does he think that scientia in natural philosophy is beyond the reach of human beings, and what characterizes the conception of human knowledge in natural philosophy that he develops? Section 3 addresses the question provoked by Locke’s apparently conflicting treatments of the corpuscular hypothesis. Does he accept or defend the corpuscular hypothesis? If not, what is its role in his thought, and what explains its close connection to key theses of the Essay? Since a scholarly debate has arisen about the status of the corpuscular hypothesis for Locke, Section 3 reviews some main positions in that debate. Section 4 considers the relationship between Locke’s thought and that of a figure instrumental to the changing conceptions of scientific knowledge, Isaac Newton
Types and Tokens
Abstract: The distinction between a type and its tokens is a useful metaphysical distinction. In §1 it is explained what it is, and what it is not. Its importance and wide applicability in linguistics, philosophy, science and everyday life are briefly surveyed in §2. Whether types are universals is discussed in §3. §4 discusses some other suggestions for what types are, both generally and specifically. Is a type the sets of its tokens? What exactly is a word, a symphony, a species? §5 asks what a token is. §6 considers the relation between types and their tokens. Do the type and all its tokens share the same properties? Must all the tokens be alike in some or all respects? §7 explains some problems for the view that types exist, and some problems for the view that they don’t. §8 elucidates a distinction often confused with the type-token distinction, that between a type (or token) and an occurrence of it. It also discusses some problems that occurrences might be thought to give rise to, and one way to resolve them.
Teleological Theories of Mental Content
Abstract: Teleological theories of mental content try to explain the contents of mental representations by appealing to a teleological notion of function. Take, for example, the thought that blossoms are forming. On a representational theory of thought, this thought involves a representation of blossoms forming. A theory of content aims among other things to tell us why this representation has that content; it aims to say why it is a thought about blossoms forming rather than about the sun shining or pigs flying or nothing at all. In general, a theory of content tries to say why a mental representation counts as representing what it represents.
According to teleological theories of content, what a representation represents depends on the functions of the systems that produce or use the representation. The relevant notion of function is said to be the one that is used in biology and neurobiology in attributing functions to components of organisms (as in “the function of the pineal gland is secreting melatonin” and “the function of brain area MT is processing information about motion”). Proponents of teleological theories of content generally understand such functions to be what the thing with the function was selected for, either by ordinary natural selection or by some other natural process of selection.
The Analysis of Knowledge
Summary: This entry provides an overview of attempts to analyse knowledge, including the topics: knowledge as justified true belief; lightweight knowledge; the Gettier problem; no false lemmas; modal conditions; doing without justification?; is knowledge analyzable?; epistemic luck; virtue-theoretic approaches; knowledge first; pragmatic encroachment; contextualism; and an introduction that briefly discusses what it is to analyse knowledge.
Epistemic Logic
Abstract: Epistemic logic is the logic of knowledge and belief. It provides insight into the properties of individual knowers, has provided a means to model complicated scenarios involving groups of knowers and has improved our understanding of the dynamics of inquiry.
Possible Objects
Abstract: Deep theorizing about possibility requires theorizing about possible objects. One popular approach regards the notion of a possible object as intertwined with the notion of a possible world. There are two widely discussed types of theory concerning the nature of possible worlds: actualist representationism and possibilist realism. They support two opposing views about possible objects. Examination of the ways in which they do so reveals difficulties on both sides. There is another popular approach, which has been influenced by the philosophy of Alexius Meinong. The Meinongian approach is relevant to theorizing about possible objects because it attempts to construct a general theory of objects other than ordinary concrete existing objects. Independently of the debate about the nature of possible worlds or about Meinongianism, it is not always as straightforward as it may at first appear to determine whether putative possible objects are indeed possible. Another category of object similar to that of a possible object is the category of a fictional object. Although initially attractive, the idea that fictional objects are possible objects should not be accepted blindly. An important instance of theoretical usefulness of possible objects is their central role in the validation of two controversial theorems of a simple quantified modal logic.
Justice, Inequality, and Health
Content: Sreenivasan asks: ‘what makes a health inequality an injustice, when it is one? Do <em>health</em> inequalities have some significance in justice that differs from other important inequalities? Or is the injustice of an unjust inequality in health simply due to the application of general principles of equality and justice to the case of health?’
The Nonidentity Problem
Introduction: The nonidentity problem focuses on the obligations we think we have in respect of people who, by our own acts, are caused both to exist and to have existences that are, though worth having, unavoidably flawed – existences, that is, that are flawed if those people are ever to have them at all. If a person’s existence is unavoidably flawed, then the agent’s only alternatives to bringing that person into the flawed existence are to bring no one into existence at all or to bring a different person – a nonidentical but better off person – into existence in place of the person whose existence is flawed. If the existence is worth having and no one else’s interests are at stake, it is unclear on what ground morality would insist that the choice to bring the one person into the flawed existence is morally wrong. And yet at the same time – as we shall see – it seems that in some cases that choice clearly is morally wrong. The nonidentity problem is the problem of resolving this apparent paradox.
The problem raises the question whether the (usually significant) good that an agent confers along with existence counterbalances the (usually limited) bad that an agent confers along with any unavoidably flawed existence in such a way that our existence-inducing act (usually) will be deemed permissible. And if it isn’t – if we think instead that obligations are left unsatisfied despite the good that comes with existence – is the moral of the story that moral obligation extends beyond what we must do for people? If we agree, in other words, that it is our obligation to create additional good, is it enough that we create additional good for each and every existing and future person? Or does the nonidentity problem show that our focus should instead be on creating additional good for the universe? As we query how to evaluate existence-inducing acts for their moral permissibility – as well as outcomes or possible futures or worlds, for their moral betterness against still other worlds – we find that some of our most deeply held intuitions regarding the nature and structure of morality are thrown into doubt.
Virtue Ethics
Introduction: Virtue ethics is currently one of three major approaches in normative ethics. It may, initially, be identified as the one that emphasizes the virtues, or moral character, in contrast to the approach which emphasizes duties or rules (deontology) or that which emphasizes the consequences of actions (consequentialism). Suppose it is obvious that someone in need should be helped. A utilitarian will point to the fact that the consequences of doing so will maximize well-being, a deontologist to the fact that, in doing so the agent will be acting in accordance with a moral rule such as “Do unto others as you would be done by” and a virtue ethicist to the fact that helping the person would be charitable or benevolent.
Three of virtue ethics’ central concepts, virtue, practical wisdom and eudaimonia are often misunderstood. Once they are distinguished from related but distinct concepts peculiar to modern philosophy, various objections to virtue ethics can be better assessed.
Hume’s Moral Philosophy
Introduction: Hume’s position in ethics, which is based on his empiricist theory of the mind, is best known for asserting four theses: (1) Reason alone cannot be a motive to the will, but rather is the “slave of the passions” (see Section 3) (2) Moral distinctions are not derived from reason (see Section 4). (3) Moral distinctions are derived from the moral sentiments: feelings of approval (esteem, praise) and disapproval (blame) felt by spectators who contemplate a character trait or action (see Section 7). (4) While some virtues and vices are natural (see Section 13), others, including justice, are artificial (see Section 9). There is heated debate about what Hume intends by each of these theses and how he argues for them. He articulates and defends them within the broader context of his metaethics and his ethic of virtue and vice.
Hume’s main ethical writings are Book 3 of his Treatise of Human Nature, “Of Morals” (which builds on Book 2, “Of the Passions”), his Enquiry concerning the Principles of Morals, and some of his Essays. In part the moral Enquiry simply recasts central ideas from the moral part of the Treatise in a more accessible style; but there are important differences. The ethical positions and arguments of the Treatise are set out below, noting where the moral Enquiry agrees; differences between the Enquiry and the Treatise are discussed afterwards.