The Born rule

We deduce the Born rule. No use is required of quantum postulates. One exploits only rudimentary quantum mathematics–a linear, not Hilbert’, vector space–and empirical notion of the statistical length of a state. Its statistical nature comes from the experimental detector-clicks being formalized into the abstract quantum micro-events. We also comment on that it is not only that the use has not been made of some quantum axioms when deriving the rule but, in a sense, their invoking would be inconsistent.