UPDATE:Â As expected, readers quickly found issues with the numbers I provided yesterday. Rather than change the story—which would be both a nightmare and an unacceptable re-writing of history—please see the end of this article for a major correction. Thanks for all the feedback. –Paul
While Microsoft refuses to release hard numbers for Surface sales, I’m wondering if there isn’t a way to calculate rough unit sales figures for Surface Pro 4 and Surface Book.