Recent years have seen increasing interest in interventionist analyses of metaphysical explanation. One area where interventionism traditionally shines, is in providing an account of explanatory depth; the sense in which explanation comes in degrees. However, the literature on metaphysical explanation has left the notion depth almost entirely unexplored. In this paper I shall attempt to rectify this oversight by motivating an interventionist analysis of metaphysical explanatory depth (MED), in terms of the range of interventions under which a metaphysically explanatory generalization remains invariant. After elucidating the notion through a toy-example, I demonstrate the important work which MED can perform in characterizing debate within contemporary metaphysics. Focusing upon rival approaches to explaining the identity and distinctness of concrete objects, I argue that the progress achieved in this debate can be characterized in terms of increasing explanatory depth. Having made an initial case for the utility of MED, I then turn this analysis to the metaphysics of explanation itself. By adopting an interventionist framework with respect to MED, I will show that we can assess the depth of competing theories of explanation. This application has two interesting results: first, it suggests that an interventionist analysis of explanation provides deeper explanations of the connection between explanans and explanandum than rival accounts; and second, it suggests that explanations provided by interventionism become deeper still, if one accepts that this methodology ranges over metaphysical, as well as causal, instances.

近年来，人们对形而上学解释的干预主义分析越来越感兴趣。干预主义传统上闪耀的一个领域是提供解释性深度的说明；解释以度为单位的意义。然而，关于形而上学解释的文献几乎完全没有探索过这个概念的深度。在本文中，我将尝试通过激发对形而上学解释深度 (MED) 的干预主义分析来纠正这种疏忽，在干预范围内，形而上学解释性的概括保持不变。在通过一个玩具示例阐明了这个概念之后，我展示了 MED 在表征当代形而上学中的辩论方面可以执行的重要工作。着眼于解释具体对象的同一性和独特性的竞争方法，我认为在这场辩论中取得的进展可以用解释深度的增加来描述。在对 MED 的效用做了初步论证后，我将这一分析转向解释本身的形而上学。通过采用关于 MED 的干预主义框架，我将表明我们可以评估相互竞争的解释理论的深度。这个应用程序有两个有趣的结果：首先，它表明对解释的干预主义分析比竞争对手的账户提供了对解释者和解释者之间联系的更深入的解释；其次，它表明干预主义提供的解释会变得更深入，如果人们接受这种方法论范围超过形而上学以及因果关系，