 The argument from underlying social-level mechanisms makes it plain that the adoption of the mechanism model of explanation does not lend support to the view that purely holist explanations need always be accompanied by accounts of individual-level microfoundations. The model states that an explanation, or a satisfactory or complete explanation, describes how one phenomenon, via underlying mechanisms, brought about another phenomenon, and this is perfectly compatible with accounts of the underlying mechanisms consisting in descriptions of mechanisms at the level of other (though lower-level) social phenomena. Thus the argument from underlying social-level mechanisms does not challenge the mechanism model of explanation. Other arguments offered by methodological holists, however, aim to do exactly this. 