The crusades fizzle out as we start off in the 13th century. We begin to see more scientific learning in Europe as the learning of Islam seeps deeper into the Western psyche. There is a feel of exploration both in mind and in space. The existence of the American continents is realized by Europe, and soon the whole world has been circumnavigated. The explorations of the mind were both in theological and natural philosophy. With the various inquisitions in play, some ideas, even if right, were too dangerous to express. A revolution is needed.