...while digital devices may be fine for reading that we don’t intend to muse over or reread, text that requires what’s been called "deep reading" is nearly always better done in print... Digital reading also encourages distraction and invites multitasking. Among American and Japanese subjects, 92 percent reported it was easiest to concentrate when reading in hard copy. (The figure for Germany was 98 percent.) In this country, 26 percent indicated they were likely to multitask while reading in print, compared with 85 percent when reading on-screen. Imagine wrestling with Finnegan’s Wake while simultaneously juggling Facebook and booking a vacation flight. You get the point...But will you get and read the book?
How E-Reading Threatens Learning in the Humanities - Commentary - The Chronicle of Higher Education
A person who won't read has no advantage over one who can't read.