Eliminativism and Evolutionary Debunking

Eliminativists sometimes invoke evolutionary debunking arguments against ordinary object beliefs, either to help them establish object skepticism or to soften the appeal of commonsense ontology. I argue that object debunkers face a self-defeat problem: their conclusion undermines the scientific support for one of their premises, because evolutionary biology depends on our object beliefs. Using work on reductionism and multiple realizability from the philosophy of science, I argue that it will not suffice for an eliminativist debunker to simply appeal to some object-free surrogate theory of evolution that results from converting any scientific proposition about some object K into a proposition about simples arranged K-wise. In the process, I examine some hazards peculiar to eliminative reductions of scientific theories, and propose a trilemma for eliminativists who attempt to recoup generality for ontologically sparse reducing theories by appealing to pluralities of simples arranged K-wise. The paper is intended to define and develop the object debunker’s self-defeat problem for further study, and to clarify some of the ways sparse and abundant ontologies interact with scientific theory.

RIGHTS AS RATIONALIZATIONS? PSYCHOLOGICAL DEBUNKING OF BELIEFS ABOUT HUMAN RIGHTS

ABSTRACT This paper explores a novel type of argument in legal theory—a psychological debunking argument—by the example of the justification of human rights and based on a psychological dual-process model of decision-making. Debunking arguments undermine confidence in a belief because of shortcomings of the empirical conditions under which it was formed. They thereby open a route from the descriptive to the evaluative, from Is to Ought, without illicitly crossing metaethical waters since they involve normative premises. As they are epistemic, they cannot replace substantive arguments on the merits. However, they may be useful when substantive arguments are stalled or the necessity to make a judgment precludes further discussions. The controversial justification of human rights is a good test case for debunking arguments. The challenge is to find features in the formation of beliefs about human rights that undermine their epistemic justification. Some psychologists claim that relevant beliefs arise from the rationalization of intuitions. This process is ill-suited to generate correct beliefs; so formed beliefs may be debunked. This also shows how legal reasoning might be improved.

Two versions of the evolutionary debunking arguments and their challenges to moral realism

This paper assesses some challenges posed by evolutionary debunking arguments in Joyce’s function and Street’s contingency versions to moral realism, understood as the metaethical theory according to which there are moral facts that are absolute, universal and context-independent. Some argue that Copp’s society centred realism is untenable given that it cannot support counterfactuals. Shafer-Landau and Huemer’s arguments are also subject to debunking because they cannot persuasively show that human morality is unaffected by evolutionary forces. In Huemer’s view, moral progress is proof of moral facts. It requires moral realism due to progress being context-dependent. From an evolutionary point of view, there are no previous standards and ideals concerning the direction of progress. Finally, a possible answer to the function version of the evolutionary debunking arguments is the possibility that the nature of human language (including moral language) is such that, in essence, it cannot be convincingly divided in language about facts and language about value.

Theism & Evolutionary Debunking Arguments Against Moral Realism

Evolutionary debunking arguments against morality come in a variety of forms that differ both in how they take evolution to be problematic for morality and in their specific target of morality i.e. objectivity, realism, justification for moral beliefs, etc. For the purpose of this paper, I will first articulate several recent debunking approaches and highlight what they take to be problematic features of evolutionary history for morality. In doing so I will be forced to abstract from some of the specific arguments offered, although I will provide replies to particular aspects of the arguments offered by Michael Ruse, Sharon Street and Richard Joyce. Then, I will show that theists have independent reasons for rejecting certain, core assumptions of these debunking approaches, thus deflating the major thrust of debunking worries for morality. While there may be good responses available to the non-theist realist with respect to several of the worries raised below, this paper will simply show why the theist need not be troubled by contemporary debunking approaches against morality.

Defusing the Regress Challenge to Debunking Arguments

AbstractsA debunking argument contends that some target moral judgments were produced by unreliable processes and concludes that such judgments are unjustified. Debunking arguments face a regress challenge: to show that a process is unreliable at tracking the moral truth, we need to rely on other moral judgments. But we must show that these relied-upon judgments are also reliable, which requires yet a further set of judgments, whose reliability needs to be confirmed too, and so on. Some argue that the debunker faces an insurmountable regress, which disables the debunking conclusion. In this paper, I explore and defuse this regress challenge.