Amazon is ushering in yet another change to the book-buying experience with the opening of brick and mortar stores across the country. Massachusetts’ first Amazon store recently opened at Dedham’s Legacy Place. So what does the latest move mean for competitors? Ryan Raffaelli ( @ryanIraffaelli ), an assistant professor at Harvard Business School, who has researched Amazon as part of his work on organizational reinvention, and Josh Cook ( @PorterSqBooks ), bookseller and Marketing Director at Porter Square Books in Cambridge, join Adam Reilly to discuss.