 After the Condemnation of 1277, Christian philosophers became even more focused on epistemology. Debates often centered on the medieval distinction between intuitive cognition and abstractive cognition—roughly, the distinction between knowing something as present and existent, and knowing something from a remove (e.g., through memory, or through an inference). In addition, many philosophers began to explore the nature of sensory illusions in more detail. And of course, the Evil Demon hypothesis loomed ever larger as the notion of Divine Omnipotence was explored more fully.