Please read "The undeserving rich". Why does the article suggest that Warren Buffet did not independently earn the billions of dollars he has amassed? Of course, some of his riches are the fruits of his hard work, effort, skills, ingenuity, intelligence, and courage. But, the article suggests that Buffet and other "Great Innovators" or "Great Inventors" like him used other resources (that were not their own) to amass their fortunes. What "other resource" is the article talking about?