Deferentialism and the Territory of Philosophy

David Liggins and Chris Daly have argued against a recent trend in which some philosophical debate or other is said to be settled by claims from a discipline other than philosophy, because claims from that discipline entail a position on the debate and any claims from that discipline have greater authority than any philosophical claims when the aim is to extend our knowledge. They label this trend deferentialism. This paper presents a dilemma for their argument.