  Identical systems, or entities, are indistinguishable in quantum mechanics
(QM), and the symmetrization postulate rules the possible statistical
distributions of a large number of identical quantum entities. However, a
thorough analysis on the historical development of QM attributes the origin of
quantum statistics, in particular, Bose-Einstein statistics, to a lack of
statistical independence of the micro-states of identical quantum entities. We
have recently identified Bose-Einstein statistics in the combination of words
in large texts, as a consequence of the entanglement created by the meaning
carried by words when they combine in human language. Relying on this
investigation, we put forward the hypothesis that entanglement, hence the lack
of statistical independence, is due to a mechanism of contextual updating,
which provides deeper reasons for the appearance of Bose-Einstein statistics in
human language. However, this investigation also contributes to a better
understanding of the origin of quantum mechanical statistics in physics.
Finally, we provide new insights into the intrinsically random behaviour of
microscopic entities that is generally assumed within classical statistical
mechanics.
