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Tagged ‘evolution’

David Copp and the Darwinian Dilemma

Do evaluative attitudes 'track' moral facts?

The Darwinian Dilemma, introduced by Sharon Street, is based on a simple empirical point: evolutionary forces have played a crucial role in the development of human evaluative attitudes. But, if this is the case, Street claims, then moral realists, who believe that there exist normative truths independent of our evaluative attitudes, have to explain the relation between those truths and the evaluative attitudes. The dilemma is simple. If realists accept that evaluative attitudes have evolved to track natural moral facts, then they have to provide an account of that tracking (which they have failed to do). If, on the other hand, they reject this assumption, then they are directly confronted with skepticism: there would be no reason (apart from a gigantic coincidence) to think that our attitudes reflect some independent moral facts. In his criticism of Street, David Copp attempts to provide a realist account of moral truths that will not be vulnerable to the Darwinian Dilemma. He proceeds by specifying the nature of the truth conditions of moral propositions, stipulating that a given moral proposition is true if a morally authoritative standard enjoys a particular truth-grounding status. For Copp, the morally authoritative standard is the normative code that would best serve the basic needs of a society, if it were to serve as its moral code (2008, p.199). According to this “society-centered” theory, morality has the function of “enabling society to meet its needs” (p.198). If we accept this account, Copp claims, then we can provide a realist account of morality compatible with the evolutionary explanation of the evaluative attitudes: the evolved attitudes would favor behavior that is very similar to the behavior favored my the social moral code; i.e. the evaluative attitudes effectively ‘track’ (or ‘quasi-track’) moral truths. Continue reading

Philip Kitcher and Psychological Altruism

Chimpanzee coalitions - a form of proto-sociality?

In his Psychological Altruism, Evolutionary Origins and Moral Rules (1998), Philip Kitcher gives a novel account of the evolutionary development of the human capacity to form altruistic valuations (to adjust preferences on the basis of the perception of other organism’s desires). According to Kitcher, human beings have a ‘fragile’ capacity for altruism, the origins of which are not be located in a pre-historical form of “Prisoner’s Dilemma”, but in a more ‘trivial’ development: the dynamics of forming alliances and coalitions among pre-social animals. To account for the development of proto-sociality, we should not imagine a hypothetical scenario of individual organisms calculating fitness benefits, a scenario which, Kitcher claims, presupposes a stable “pool of possible partners”. On the contrary, we should look to explain the formation of that very ‘pool’, the minimal form of animal sociality. That formation, he speculates, can be explained by pre-existing dispositions to form altruistic evaluations towards animals with whom the agent has a history of interactions. Continue reading

Robert J. Richards and the Naturalistic Fallacy

Robert J. Richards

In his A Defence of Evolutionary Ethics, Robert J. Richards attempts to provide a model of evolutionary ethics that does not commit the “naturalistic fallacy”. That is to say, he attempts to demonstrate how, given only facts about evolved human behavior, we can derive an ‘ought’ from an ‘is’, without that inference being in anyway fallacious.

In the first part of his essay, Richards mounts a series of biological claims (which he asks the reader to suppose and not to question) with a single central point: evolution has constructed human beings to act for the community good (i.e. to act altruistically). In other words, human beings have as a matter of fact evolved to behave altruistically.  With this claim taken as axiomatic, Richards moves on to propose the central argument for an evolutionary ethics that does not commit the Moore-an “naturalistic fallacy”. A general derivation of an ‘ought’ from an ‘is’, he claims, is possible via descriptive causal laws.  Borrowing the account from Gewirth, he defines ‘ought’ as meaning “necessitated or required by reasons stemming from some structured context” (p.287). Accordingly, Richards claims, we can derive the necessity of the moral behavior on strictly causal grounds. Given the evolutionary constitution of the human, moral behavior “ought to occur”; just as a stone “ought to fall down” if dropped from the top of a building. Morality is a necessary causal outcome of evolutionary developments; an ‘ought’ of human nature, derived in a non-fallacious manner.

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Valid and Cheap Individualism

Bird warning calls - a locus classicus in group selection theory

The “level of selection” debate has been one of the most interesting debates in evolutionary theory. Does natural selection operate strictly on the level of the individual? Or is there such thing as “group selection”? Recently, David Sloan Wilson has revitalized the latter view, arguing against any principled privileging of the individual as the sole unit of natural selection. Wilson attacks the individualistic tradition in biology  on conceptual grounds, attempting to demonstrate that individualism achieves generality only by trivially defining self-interest as “anything that evolves”. He proceeds by distinguishing two sorts of individualism.‘Valid’ individualism, Wilson claims, identifies individual selection specifically with within-group selection and argues that individual selection (as defined) is consistently stronger than between-group selection. ‘Cheap’ individualism, on the other hand, identifies individual selection with the average fitness of all individuals across groups (thus including both within-group and between-group selection). Therefore, cheap individualism includes every kind of selection in individual selection and then unwarrantedly concludes that group selection does not exist. It is “cheap individualism” that Wilson wants to ostracize, proposing this conceptual definition in order to re-introduce multiple levels of selection in evolutionary theory. Continue reading


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