My esteemed editor, Dan, posed a question today, after processing B&N's recent holiday sales stats: Why IS Barnes & Noble failing so badly? After reading their Christmas-season sales numbers, nobody can deny that their sales are not what they could be? Why? With all due respect to Dan, who I think is a fabulous guy, I think the answer is a lot more straightforward than he might think. It's not about sales metrics, or marketing techniques, or any complicated analysis I think he was seeking. The answer is simple: It's because the world has more non-Americans than Americans, and Barnes &...