The human brain—arguably the most complex matter in the Universe—performs thousands of unusual and unique mental functions. Within that three pounds of grey matter, exist over 10 billion neurons containing education, memories, communication skills, emotions, likes and dislikes—yet all the while that same three pounds of matter continues to regulate bodily functions. Many have denounced the Cartesian dualistic view of brain and mind, suggesting instead that all human experiences can be explained simply by the firing of neurons. According to some, there is nothing in the mind except neuronal activity. But this would mean that emotion-based responses such as tears and laughter are solely products of organic evolution—something that were "naturally selected for" in humans. Evolutionists ascribe the brain's origin to nothing more than a triune layering of various animal-stage brains. Many believe that the fossil record supports this gradual increase in brain size over eons of time as humans allegedly improved their mental faculties. However, we know today that human brains vary greatly in size, and that no evidence exists to demonstrate a relationship between brain size and intelligence. The precision, complexity, and interconnectivity of the brain indicate that it was not laid down in layers. While many questions regarding the human brain still remain, its origin cannot be explained by current evolutionary theory. The ability of the human brain to interact with the human mind clearly points to an Almighty Creator.