One of the theories espoused by Dan Brown's new book is that when many people share the same thought, that thought can have physical effects. Let's test it on Tuesday. Watch what happens to bloggers, booksellers, nitpickers, code crackers, conspiracy theorists, fans and overheated search engines when 'The Lost Symbol,' Brown's overdue follow-up to 'Angels & Demons' (2000) ats, Brown is well aware of how widely read and closely scrutinized 'The Lost Symbol' will be. He even lets a character joke about this book's guaranteed!? 