The human brain is the largest brain of all vertebrates relative to body size. It weighs about 3.3lbs, and makes up about 2% of our body weight.
Yet, while it seems so small, the brain is one of the most mysterious organs in our body. We have a great understanding of how most of our organs work. That includes the heart, the pancreas, the liver, colon, kidneys, and so on.
But the brain? It is one of the more mysterious organs in our body. The cerebrum makes up 85% of the brain’s weight, and contains more than 86 billion nerve cells. This is the “gray matter”.
This documentary explains how our brain works, but also how it evolves over time. For example, the more complex our brain becomes, the more complex reality becomes. The excellent documentary shows how our five senses are not for us to perceive reality, but to create it.