 Let’s go back to the Humean Regularity Theory. HRT enjoys two benefits. As we have observed, no substantive metaphysics is needed to explain causation. No entities like causal powers or a necessary connection between cause and effect need to be posited. Causation is rather reduced to spatiotemporal contiguity, temporal precedence, and regular association. Second, Hume’s regularity theory explains how we can figure out what causes what. A cause is simply the event which temporally precedes and is spatiotemporally contiguous to another event such that the former and latter event instantiate a regularity. Since temporal precedence and spatiotemporal precedence can be observed, the problem of identifying causes reduces to the problem of identifying regularities.