no wonder ferris bueller take the day off. if he were a virginia fourth grader, he might have learned a whole lot more about history by ditching class. why would anyone buy such a book in the first place? well, one school official told cnn they were about 17 bucks cheaper than the alternative. saving virginia schools money but landing them on the ridiculist. >>> that does it for this edition of >>> tonight, carlos slim. >> i think that anything that frivolous. >>> he tells us how he fears for his safety. believe it or not, he lives a lot like the rest of us. we will show you a humble, unassuming tycoon. the extraordinary carlos slim on ""larry king live."" it is an honor to welcome to ""larry king live"" carlos slim. we honored to welcome him in our studios. >> how does it feel when you were ranked number one? >> thank you very much for your invitation, larry. >> it's important how you operate your company. and the part of the public is investigating in the company. >> larry: so it was not a particular honor? >> no, no. it was