Explanatory gaps in mental, normative, and other domains: A general diagnosis

"I assume that there exists a general phenomenon, the phenomenon of the explanatory gap, surrounding phenomenal consciousness, normativity, intentionality, personal identity, and more. Explanatory gaps are often thought to foreclose reductive possibilities wherever they appear. In response, reductivists who grant the existence of these gaps have offered countless local solutions. But all such reductivist responses have had a serious shortcoming: because they appeal to essentially domain-specific features, they cannot be fully generalized, and in this sense these responses have been not just local but parochial. Here I do better. Taking for granted that the explanatory gap is a genuine phenomenon, I offer a fully general diagnosis that unifies these previously fragmented reductivist responses."

https://www.yale-nus.edu.sg/about/faculty/neil-mehta-2/