Conceivable Isolation of Subjects (CIS)—For any group of subjects, \(S_{1}\), \(S_{2}\), …, \(S_{n}\), and any conscious states, \(E_{1}\), \(E_{2}\), …, \(E_{n}\), the following scenario is conceivable: there are \(S_{1}\), \(S_{2}\), …, \(S_{n}\) instantiating \(E_{1}\), \(E_{2}\), …, \(E_{n}\), but it’s not the case that there is a subject \(S^*\) such that \(S^*\) is not identical with any of \(S_{1}\), \(S_{2}\) … \(S_{n}\).