Intentionalism is driven by current themes in the philosophy of mind. Many in that field are optimistic about providing a broadly scientific, causal account of representation and intentionality. If one could provide such an account then a naturalistically acceptable theory of perception should be seen to drop out of this research. To explain perception one does not have to posit non-physical sense data; rather, one could simply use one’s naturalistic account of intentional content, since, according to intentionalists, the important features of perception are captured by this notion.