Home – Home – Jornals – Philosophy of Sciences 2021 number 4

We argue that Anton Zeilinger’s “foundational conceptual principle” for quantum mechanics, according to which an elementary system carries one bit of information, is an idealistic principle and should be replaced by a realistic principle of contextuality. The specific properties of quantum systems arise from the impossibility of talking about them without regard to the tools of their observation/identification and, therefore, to the context in which these tools are applied. In particular, the assumption of non-locality is not required to explain quantum correlation. Correlated quantum events are interrelated in a causal way. Yet, this is not classical, but quantum causality expressed by an entangled wave function. This or that particular correlation does not arise in measurement; in measurement, it is identified in context. In contrast to Zeilinger’s principle of quantization of information, the principle of contextuality explains it realistically.