Its descendant, Homo sapiens, spreads unopposed through Europe. Hippocrates describes head injuries and identifies the brain as the seat of intelligence. Archimedes estimates , and Pythagoras formulates his theorm for right-angled triangles. Heraclides discovers that Venus and Mercury revolve around the sun, and adopts the view that the earth rotates on its axis once every 24 hours.
Barbarian tribes invade Rome, civilization splinters.
Descartes also achieves a new synthesis between Geometry and calculus. Newton revolutionises science with deterministic, universal laws. French physician Julian Offray publishes L'Homme Machine, Offray flees persecution in France and spends the rest of his life in exile. Compelling evidence that mind is based on the brain. Cajal and Golgi both given the nobel prize for physiology.