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Dear Daniel, Thank you for your answer. The reason why I Invoke ontology is because as you just replied now ”I don’t prove that quantum mechanics is intrinsically retrocausal”. But if we dont prove and if you only suggest then you are going beyond facts? or not? Actually, my problem is the following David Hume already showed that causality can not be proven experimentally : you will never be sure that the succesion you observed once will come back again if you reproduce the experiment. You need a law and a postulate to fix that. Classical physics with Newton called that determinism and it relied on the study on an ontology describing the dynamics of the real world existing independently of the observer. If now you say that it is ‘natural’ to use retrocausality you somehow enter in the metaphysical universe of ontology like Bohmian do. This is beyond Bohr of course and I say that only because in my view you are hidding some (may be unconscious ) ontological preconceptions under your interpretation.