Shadow Economy & Corruption : Invisible Hands

Knowledge is what we know
Also, what we know we do not know.
We discover what we do not know
Essentially by what we know.
Thus knowledge expands.
With more knowledge we come to know
More of what we do not know.
Thus knowledge expands endlessly.
* * *
All knowledge is, in final analysis, history.
All sciences are, in the abstract, mathematics.
All judgements are, in their rationale, statistics.