Diversity Reading List

Summary: This chapter explores the core thought of the idea of emergentism, that as systems acquire increasingly higher degrees of organizational complexity, they begin to exhibit novel properties which in some sense transcend the properties of their constituent parts, and behave in ways that cannot be predicted on the basis of the laws governing simpler systems. The birth of emergentism can be traced back to John Stuart Mill and his distinction between "heteropathic" and "homeopathic" laws. Academic philosophers contributed to the development of emergence and the attendant doctrines of emergentism, but it is interesting to note that the fundamental idea seems to have had a special appeal to scientists and those outside professional philosophy. In spite of this, emergentism failed to become a visible part of mainstream philosophy of science because philosophy of science was, at the time, shaped by positivist and hyper-empiricist views that dominated Anglo-American philosophy.

Summary: The term 'biosemantics' has usually been applied only to the theory of mental representation. This article first characterizes a more general class of theories called 'teleological theories of mental content' of which biosemantics is an example. Then it discusses the details that distinguish biosemantics from other naturalistic teleological theories. Naturalistic theories of mental representation attempt to explain, in terms designed to fit within the natural sciences, what it is about a mental representation that makes it represent something. Frequently these theories have been classified as either picture theories, causal or covariation theories, information theories, functionalist or causal-role theories, or teleological theories, the assumption being that these various categories are side by side with one another.

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.