““he wanted to shed light on the fact that several brains pondering about the same problem are more effective than one single brain. Napoleon Hill interviewed successful entrepreneurs like the steel baron Andrew Carnegie, the founder of Ford Motor Company Henry Ford, and the inventor of the lightbulb, Thomas A. Edison. They all surrounded themselves with a small group of trusted advisers. Even though they always made the final decisions themselves, they had at their disposal a range of intelligent opinions that could be utilised in reaching the final conclusion. Instead of only their own mind, they had a ‘Mastermind’ at their disposal. But it is not only other people’s knowledge””