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The most important thing this course has helped me to understand is that the brain is not a system of inputs and corresponding outputs, but is much more complex. This explains a lot about the brain that I hadn't previously understood, such as personal agency, the internal voice, and imagination.  I still have many of the questions that I had at the beginning of the semester because we didn't talk about how everything in the nervous system works due to time constraints. The topics covered in the course have made me curious about pain and discomfort, and how strong of an effect one's environment has on the structure of one's brain.