Abstract

Most of the contemporary literature regarding teleology or design in nature assumes that we human beings make some sort of tacit inference when we form "design beliefs" person is causally relevant to the occurrence of some event). It is often held that this inference occurs so quickly that we are unaware of the inferential process. Attempts to reconstruct this inference have met with varying degrees of success, but none of them seem to match the strength with which ordinary design beliefs are held. This dissertation therefore offers a challenge to this "inferential model" of design belief formation by arguing that in many ordinary cases we do not infer to design beliefs at all. Rather, human design beliefs often form spontaneously and properly whenever certain conditions are met, and receive some measure of positive epistemic status just in virtue of their proper and spontaneous formation. This alternative model is called a "Reidian" model because it is analogous to Thomas Reid's account of sense perception. The Reidian model offers the dialectical advantage of shifting the burden of proof from the one arguing for design to the one who claims to have a suitable "defeater" belief. It also better matches our introspective judgments about design beliefs and resolves some puzzling problems that have been noted in recent literature on design inferences. ;The Reidian model can also generate some reasonably persuasive design arguments from the deliverances of the natural sciences , but it does not sanction the inclusion of design hypotheses within the content of the natural sciences. It is also argued that none of the "defeater" propositions one might consider carries enough epistemic "weight" to defeat design beliefs that form according to the model. The resulting Reidian design arguments also have the advantage that they do not require the rejection of the Darwinian paradigm. However, it is also noted that the Reidian model presents several occasions for dialectical impasse between disputants about design in nature