One of my favorite childhood stories is The Wonderful Story of Henry Sugar by the legendary author Road Dahl. It’s the story of a selfish millionaire whose sole aim in life is to make even more money. One day, he comes across a mysterious book at a friend’s house. The book claims that by concentrating on a candle flame, he can train himself to read a playing card from the reverse side. He wants to use this skill to beat the casinos, so he starts training as hard as he can. Day after day, night after night, he concentrates on the candle. He continues training for more than two years, never leaving his flat. Finally, he succeeds: He could read a playing card from the back in 4 seconds flat. With his newfound powers, he heads to the casino. Over the course of one night, he wins 6,600 pounds (this ......