Why are you reading these lines now? We can assume that you found the title of the book interesting or just liked the cover. But not everything is so simple. The hundreds of decisions that we make every day are actually made by our brain, following only known algorithms. Since ancient times, people have been interested in the structure of our mind. And at all times, the incomprehensibility of the brain provoked the birth of myths and superstitions. However, even today, despite all the technical achievements of the 21st century, scientists are not ready to admit that they have come closer to understanding the central organ of the nervous system. In this book, we will talk about the eternal desire of people to penetrate the secrets of reason, analyze the mistakes of scientific authorities and the speculation of amateurs, which unexpectedly developed years later and contributed to progress in medicine.