Jessica Pfeifer

The Philosophy of Philip Kitcher contains eleven chapters on the work of noted philosopher Philip Kitcher, whose work is known for its broad range and insightfulness. Topics covered include philosophy of science, philosophy of biology, philosophy of mathematics, ethics, epistemology, and philosophy of religion. Each of the chapters is followed by a reply from Kitcher himself. This first significant edited volume devoted to examining Kitcher's work is an essential reference for anyone interested in understanding this important philosopher

The philosophy of science is the branch of philosophy that examines the profound philosophical questions that arise from scientific research and theories. A sub-discipline of philosophy that emerged in the twentieth century, the philosophy of science is largely a product of the British and Austrian schools of thought and traditions. The first in-depth reference in the field that combines scientific knowledge with philosophical inquiry, The Philosophy of Science: An Encyclopedia is a two-volume set that brings together an international team of leading scholars to provide over 130 entries on the essential concepts in the philosophy of science. The areas covered include biology, chemistry, epistemology and metaphysics, physics, psychology and mind, the social sciences, and key figures in the combined studies of science and philosophy. Essays range in length from 3,000 to 7,500 words and represent the most up-to-date philosophical thinking on timeless scientific topics such as determinism, explanation, laws of nature, perception, individuality, time, and economics as well as timely topics like adaptation, conservation biology, quantum logic, consciousness, evolutionary psychology, and game theory. Offering thorough explorations and destined to become the most authoritative presentation of the field available, this Encyclopedia is a unique and groundbreaking guide to this fascinating field.

Contemporary accounts of laws of nature face two recurrent problems. On the one hand, some accounts capture what is distinctive about laws---their nomic necessity and their support of counterfactuals. However, they do this at the cost of making obscure how we are ever able to justify a claim that something is a law. On the other hand, there are accounts that seem to give us epistemic access to laws, but these appear unable to capture their distinctive characteristics. ;I resolve this dilemma by providing a new account of laws. The natural way to express the modal character of laws, including the counterfactuals that they support, is to employ possible worlds semantics. On all available ways of understanding this semantics, however, the dilemma arises. I propose a new solution that treats possible worlds in the Carnapian spirit as maximal sets of propositions. What is distinctive about my account is the relationship I draw between modal, higher-order, and first-order facts. Various kinds of modal facts are generated by higher-order constraints on the sets of first-order propositions that are possibly true. Nomically necessary truths hold in virtue of a particular type of higher-order fact: the relations among properties; and the nomically possible worlds consist of all those combinations of first-order propositions that are compatible with the constraining relations among properties. ;By understanding nomically necessary truths as relations among properties, it becomes clear how the routine practices of scientists---observation and experiment---can lead to knowledge of laws. These methods allow scientists to explore the relations among properties by altering and investigating what combinations of properties are present in various samples. Scientists, in effect, create and explore the nomic possibilities. In so doing, they are able to discover the nomically necessary truths and, hence, the laws. We thus achieve an account of laws on which the distinctive modal characteristics can be naturally understood, and at the same time clarify how we can justify our beliefs about them by just the sort of methods scientists have always employed. Perhaps God did not play dice with the universe, but we can

Mill appears to be committed to two incompatible accounts of laws. While he seems to defend a Humean account of laws similar to Ramsey’s and Lewis’s, he also appears to rely on modal notions to distinguish lawful relations from accidental regularities. This paper will show that Mill’s two accounts of laws are in fact equivalent. This equivalence results from a proper understanding of the necessity involved in laws and a proper understanding of systematization. This equivalence reveals the true source of the intimate connection between laws and systematization. Mill also provides an account of natural necessity that makes clear why experimentation is essential for gaining knowledge of laws. In contrast, Lewis’s account will be shown to have counterintuitive consequences regarding the relationship between laws and experimentation. Moreover, it will be shown that Mill’s views about inference result in a distinction between two modes of systematizing: subsumption and derivation. This distinction is overlooked in contemporary accounts of systematization, but Mill rightly notes that the metaphysical implications and epistemic role of these two modes are importantly different.

The first in-depth reference in the field that combines scientific knowledge with philosophical inquiry, _The Philosophy of Science: An Encyclopedia_ is a two-volume set that brings together an international team of leading scholars to provide over 130 entries on the essential concepts in the philosophy of science. _The areas covered include:_ biology chemistry epistemology and metaphysics physics psychology and mind the social sciences key figures in the combined studies of science and philosophy. The essays represent the most up-to-date philosophical thinking on timeless scientific topics such as: determinism, explanation, laws of nature, perception, individuality, time, and economics as well as timely topics like adaptation, conservation biology, quantum logic, consciousness, evolutionary psychology, and game theory.

In this paper, I discuss how information theory has been used in the study of animal communication, as well as how these uses are justified. Biologists justify their use of Shannon’s information measures by the work they do in allowing for comparisons between different organisms and because they measure a quantity that is purported to be important for natural selection. I argue that there are problems with both sorts of justification. To make these difficulties clear, I focus on the use of Shannon’s information measures to quantify the amount of information transmitted by the fire ant’s odor trail and the honeybee’s waggle dance. Both of these systems are relatively simple and well understood, and the application of Shannon’s information measure to these systems initially seemed very promising and relatively straightforward. They are therefore particularly suitable for revealing the benefits and difficulties of applying Shannon’s information measures to biological systems in general, and animal communication systems in particular

In this paper, it is argued that selection and drift might be distinct. This contradicts recent arguments by Brandon (forthcoming) and Matthen and Ariew (2002) that such a distinction “violates sound probabilistic thinking” (Matthen and Ariew 2002, 62). While their arguments might be valid under certain assumptions, they overlook a possible way to make sense of the distinction. Whether this distinction makes sense, I argue, depends on the source of probabilities in natural selection. In particular, if the probabilities used in defining fitness values are at least partly a result of abstracting from or ignoring certain features of the environment, then selection and drift might in fact be causally distinct.