I shall state my thesis plain. The first poets were gods. Poetry began with the bicameral mind. - Julian Jaynes

It is by metaphor that language grows.

Such trade was not, however, a true market. There were no prices under the pressures of supply and demand, no buying and selling, and no money. It was trade in the sense of equivalences established by divine decree. There is a complete lack of reference to business profits or loss in any of the cuneiform tablets that have been so far translated.

The very reason we need logic at all is because most reasoning is not conscious at all.