The contribution, is mainly designed as an exercise for the
``interested reader''. The model tries to depict the dynamical
interaction between the structure of enterprises (as captured
by their size) and human capital represented by the skills available
in the pool of workers in the economy. A successful entrepreneur
can share with her/his workers part of her/his profit. Once an
imitation process is introduced among workers, these initially
successful ``professions'' will spread among workers modifying
the pool of human capital from which new entrepreneurs will draw
their work-force. The ex-ante distribution of skills is hence
modified and evolves ``interactively'' with the size distribution
of firms. Certain regularities are pointed at and hypotheses formulated.
Unanswered questions are left to the reader to be investigated.
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