认识大脑这个“三磅小宇宙”（序与跋）

Group 1 - The book "Brain Supplement: Researching the Brain to Understand Oneself" addresses the complexities of the human brain, including how it operates and the mechanisms behind various brain diseases such as depression, schizophrenia, Alzheimer's, and Parkinson's [2][3] - The human brain weighs approximately 1300 grams and consists of 80 to 100 billion neurons, with a total connection length of up to 100,000 kilometers, making it the most complex "machine" in the world [3] - Advances in technology have significantly propelled brain science research, which is foundational to various fields including artificial intelligence, social sciences, and ethics, highlighting its importance to human health and societal issues [3][4] Group 2 - The book aims to explain the development of the human brain from birth through various life stages, while also discussing common brain diseases and recent advancements in brain science that improve health and quality of life [3][4] - Understanding the brain is crucial for better self-awareness and comprehension of others, which can lead to greater understanding, confidence, and hope for the future [4]