Tycoon from humble beginnings knocks out Bill Gates to takes the top spot in the global rich list Julia Finch and Jo Tuckman Mexico City Saturday July 7, 2007 The Guardian When Carlos Slim was a child his father is said to have trained his boy to keep crystal clear accounts of his pocket money income and expenditure. Tycoon from humble beginnings knocks out Bill Gates to takes the top spot in the global rich list Julia Finch and Jo Tuckman Mexico City Saturday July 7, 2007 The Guardian...