I don't know what books you've read, but the ones I have read don't have pages which are 0.6 meters wide like my monitor. And paper newspapers, which come the c

I don't know what books you've read, but the ones I have read don't have pages which are 0.6 meters wide like my monitor. And paper newspapers, which come the closest of any medium I have used, use many columns per page to avoid ridiculous column widths. We can debate whether the optimal column width is closer to 50 characters or closer to 150 characters, but at almost 400 characters we're so far outside of what studies find comfortable that the discussion just becomes silly, IMO.