An Incomplete History of Knowledge The Struggle against the Priests Thomson von Stein  The Homo sapiens savage in Africa 100,000 years ago with an average lifespan of 20 years and foraging for food armed with a sharpened stick was fully as intelligent as the PhD scientist of today. Their brains and neo-cortices are identical. What is the difference between them? Knowledge. This history describes the most important advances in knowledge that got us from there to here.

All knowledge resolves itself into probabilities...Every statement is either 1. True or false by definition (whose denial is false), or 2. Contingent unnecessary assertions, those dependent on empirical proof (whose negations are not necessarily false), or 3. Nonsense.  -David Hume