 In order to understand this characterization, we must first understand Brogaard and Salerno’s non-standard conception of counterfactuals. According to Brogaard and Salerno, counterfactuals with impossible antecedents (“counterpossibles”) can be false (rather than being “vacuously true,” as standard accounts would have it). For example, Brogaard and Salerno would say that the following counterfactual is false: If nothing had the property of being such that there are infinitely many primes, then Socrates would not exist. Since this counterfactual is false, condition (2) is not satisfied. Thus, Socrates is not essentially such that there are infinitely many primes.