Tuesday, August 18, 2015.  Thirty years ago this month, the original (well, almost the original) formula of Coca-cola came back to store shelves as Coca-cola Classic.  I take a look at the real reason behind one of the greatest marketing failures of the 20th century, as well as noting how the company's choice in branding the return of "Old Coke" has had a surprising influence on our language.