In the summer of 1966 Foucault prepared to take on his much anticipated first position as a professor of philosophy, but unlike Kafka’s hapless countryman, Foucault did not patiently wait for the institution of philosophy to finally open its door ! He custom-built his own door by generating a model of the entirety of philosophy since Descartes, developing a combinatory matrix with four functions, four domains, and two dominant combinations, a matrix so complete it even programmed the four grand types of history of philosophy today. Yet he decided to not publish – to never publish – his diagnosis of philosophy. Why ? The mystery remains.