In terms of the "crack" part of the keyword, it's worth noting that Tony Buzan's work has been widely acclaimed and has helped millions of people around the world. While some people may have criticized his ideas or methods, there is no denying the impact that his work has had on the world of personal development and creativity.
Mind mapping activates both the left hemisphere (logic, words, lists) and the right hemisphere (images, color, spatial awareness), fostering holistic thinking. The 7 Essential Steps to Creating a Mind Map The Mind Map Book - Tony Buzan Crack