Descartes and the Curious Case of the Origin of Sensory Ideas

Descartes endorses the two prima facie inconsistent claims that sensory ideas are innate (Claim A) and caused in us by bodies (Claim B). Most scholars believe that Claims A and B can be reconciled by appealing to the notion of occasional or triggering causation. I claim that this notion does not solve the theoretical problems it is introduced to solve and it generates additional difficulties. I argue that these difficulties result from conflating two questions that need to be kept distinct while inquiring about the origin of ideas: the psychological question of the mechanisms by which we acquire ideas and the metaphysical question of how the content of these ideas is determined. I conclude by proposing a new way of reconciling Descartes's Claims A and B in light of this distinction. On my account, Descartes's very views on innateness explain why bodily states must be causes of sensory ideas.