 Causal and powers-based accounts of determination are typically motivated by the problem of mental/higher-level causation, expressed by the question: How can higher-level properties bring about effects, as they seem to do, given that the physical properties upon which these higher-level properties depend are sufficient to cause these effects? As we’ll see in  §5.2,  different causal accounts provide different answers to this question. An important choice point, which I’ll track here, concerns whether determinable and determinate instances are taken to be token-identical.