After The Little Book was published in 2005, Greenblatt began to realize how difficult it was to execute the plan he’d recommended to his readers. He and his kids tried doing it, but found it tricky to keep track of so many trades. He adds, “I got literally hundreds of emails from people saying, ‘Hey, thanks for the book. Can you just do this for me?’” He also worried that some readers might harm themselves by using unreliable corporate data pulled from the internet or by messing up the calculations when they tried to apply his formula.
