Aristotle (384-322 BC) came to Athens to study under Plato (427-347 BC). He remained at Plato's Academy for twenty years. After Plato and Xenophon (434-355 BC), he is regarded as the third leading writer in the Socratic school. This paper is part of a long-term research programme on the ancient...

Modern financial markets offer the real world's best approximation to the idealized price auction market envisioned in economic theory. Nevertheless, as the increasingly exquisite and detailed financial data demonstrate, financial markets often fail to behave as they should if trading were truly...