books.google.com - Is any of it true? If so, how true? Ken Jennings wants to find out if parents always know best. Yes, all those years you were told not to sit too close to the television or swallow your gum or crack your knuckles are called into question by our country’s leading trivia guru. Jennings separates myth...http://books.google.com/books/about/Because_I_Said_So.html?id=udIPAQAAQBAJ&utm_source=gb-gplus-shareBecause I Said So!