Abstract
Source incompatibilism is an increasingly popular version of incompatibilism about determinism and moral responsibility. However, many self-described source incompatibilists formulate the thesis differently, resulting in conceptual confusion that can obscure the relationship between source incompatibilism and other views in the neighborhood. In this paper I canvas various formulations of the thesis in the literature and argue in favor of one as the least likely to lead to conceptual confusion. It turns out that accepting my formulation has some surprising taxonomical consequences