Besides the shoddy number work, does this really tell us anything? I mean, if everyone read "exactly what was needed" then that would significantly change the

Besides the shoddy number work, does this really tell us anything? I mean, if everyone read "exactly what was needed" then that would significantly change the distribution since the current is based on "what marketers make me think I need." Therefore, this article could be viewed as positive improvement of efficiency in the book buying market. Ie more people buying "the book they need" vs "want because of flashy marketing" based on increased access to search and reviews.