The Problem of Induction This article discusses the problem of induction, including its conceptual and historical perspectives from Hume to Reichenbach. Given the prominence of induction in everyday life as well as in science, we should be able to tell whether inductive inference amounts to sound reasoning or not, or at least we should be able to identify the circumstances under which it ought to

Validity and Soundness A deductive argument is said to be valid if and only if it takes a form that makes it impossible for the premises to be true and the conclusion nevertheless to be false. Otherwise, a deductive argument is said to be invalid. A deductive argument is sound if and only if it is both valid, and all of its premises are actually

Metaethics Metaethics is a branch of analytic philosophy that explores the status, foundations, and scope of moral values, properties, and words. Whereas the fields of applied ethics and normative theory focus on what is moral, metaethics focuses on what morality itself is. Just as two people may disagree about the ethics of, for example, physician-assisted suicide, while nonetheless agreeing at the more abstract level of

John Stuart Mill: Ethics The ethical theory of John Stuart Mill (1806-1873) is most extensively articulated in his classical text Utilitarianism (1861). Its goal is to justify the utilitarian principle as the foundation of morals. This principle says actions are right in proportion as they tend to promote overall human happiness. So, Mill focuses on consequences of actions and not on rights nor ethical sentiments.

Universals Universals are a class of mind-independent entities, usually contrasted with individuals (or so-called “particulars”), postulated to ground and explain relations of qualitative identity and resemblance among individuals. Individuals are said to be similar in virtue of sharing universals. An apple and a ruby are both red, for example, and their common redness results from sharing a universal. If they are both red at the

The Theory-Theory of Concepts The Theory-Theory of concepts is a view of how concepts are structured, acquired, and deployed. Concepts, as they will be understood here, are mental representations that are implicated in many of our higher thought processes, including various forms of reasoning and inference, categorization, planning and decision making, and constructing and testing explanations. The view states that concepts are organized within and