Quantum stochasticity carries two incompatible implications. One is for the statistical divergence upon the prior absence of complete controllability over boundary conditions applied to mechanistic causation. One more alternative is for the statistical convergence upon the posterior decidability of measurement despite the absence of the prior decidability. Decidable measurement lacking the prior decidability is retrocausal. The quantum physical likelihood for the life world may derive from the statistical convergence proceeding in a durable manner. This observation suggests that there must have been some type of observers even internal to the lifeless world, otherwise no likelihood of identifying the objects of interest could be available there. Measurement activity intrinsic to the internal observers is indexical, while the similar activity specific to the external observer like us can be symbolic. The difference is in the phenomenological qualification since both are the observers of different types. A most conspicuous case demonstrating the phenomenological difference is revealed in the different nature of time to be employed and experienced there. Time serves as a principal attribute qualifying the phenomenon to be experienced as such. Qualification of time is observer dependent.
Keywords: Born's probability rule; Cohesion; Convergence; Divergence; Measurement; Observer; Reaction cycle; Retrocausality.
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