Some people are just looking for a product that will help them improve their cognitive abilities. These people may be able to have a more productive working day if they get help with more brain power. Many people who buy these products may not realize they are helping to improve their cognitive ability. If you don't know how to take the first step, this may be a great opportunity to learn about it. You can read more about the science of cognitive enhancement in our new book. This is an article from our book. This article was created in conjunction with the National Institute on Mental Health. Some products are also featured on our website. The book is published by The MIT Press. For a free PDF copy of our book, click here. The brain is not like a computer. It is not a processor; it is a huge distributed collection of neural circuits that operate at millions of times the speed of light. The brain is like a gigantic data center, with millions of computers operating at a staggering rate. Every single one of them, and not one computer. The brain has thousands of nodes, and they are connected by the vast network of neurons.