 The interpretation does not require to assume the existence of a classical world to be formulated, nor special observer systems; it does not give any special role to measurement. Instead, it assumes that any physical system can play the role of the Copenhagen’s observer and any interaction counts as a measurement. This is possible without changing the predictions of quantum theory thanks to the postulate above, because the interference observed by a system \(S'\) is not erased by the actualisation of variables relative to a different system \(S''\) (it can of course be suppressed by decoherence). In this way, RQM can make sense of a fully quantum world without requiring hidden variables, many worlds, physical collapse mechanisms, or a special role for mind, consciousness, subjectivity, agents, or similar.