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   I was completely amazed by the power of unconsciousness when Paul introduced how our memory works: when we recall, little things in the unconsciousness part of the brain connect and build new “memory”. But as the broad function of the unconsciousness surprised me, I was also wondering that if the unconsciousness part of the brain is already powerful enough, why do we still need the consciousness part of the brain? Is it only for the “conversation”? It then feels to me that there is no way to think about consciousness and unconsciousness in separate ways. Biologically, we can’t precisely divide our brain and say certain part of it operates with or without awareness. Psychologically, it is us, human being, who use our brain to say there is a difference between consciousness and unconsciousness. How do we know if they don’t superimpose each other? How do we know they are interactively working instead of working exactly together?

   Another thing I find quite interesting was the pilot 6-dimension view. It again lets me feel the broadness of the world. By studying the universe, I felt the insignificant earth as well as human being in contrast with the infinite universe; by studying biological evolution and culture, I felt the constant changing and evolving; by studying the brain, I felt so proud that brain is the broadest thing as if it could visualize and imagine everything in the world. But after getting to know multi division, I feel the world operates in a delicate connection: we can understand math but can’t imagine 6-dimension so that we can use math as a tool to get to know multi-dimension and make use of it. Can we get to know everything by this method? I don’t know…