Introspection and preserved writings give us far more insight into the ways of past humans than we have into the ways of past dinosaurs. For that reason I'm optimistic that we can eventually arrive at convincing explanations for these broadest patterns of human history.
Money is the last enemy that shall never be subdued. While there is flesh there is money or the want of money but money is always on the brain so long as there is a brain in reasonable order.
