sentences:  It is important to remember that no one of these systems of human knowledge plays a more significant role than any of the others.These systems are designed around the idea that each uses the other two to build upon itself and further human knowledge as a whole.In context the chart shows a progression of knowledge through the ages, memory being the past, reason being the present, which examines and tries to either build or create new theories based on memory, and imagination which focuses on making new assumptions or theories about things in our human universe.