This treatise addresses an interdisciplinary issue addressed by Kenneth Boulding, who lamented the difference in usage of Pacioli accounting model as between economic theorists and accoun-tants. In response, this treatise examines origins of the accounting model, and the evolution of its use are traced. Differences between economists and accountants are examined through the filter of Luca Pacioli bookkeeping model, the flawed foundation upon which all generalizations re-garding accountancy have been based for centuries. The economic nature of financial accounting models is detailed and similarities and differences between theoretical and applied models of financial accounting are examined. Pacioli applied model is re-examined in economic te...