When I read a physical newspaper, I’ll often be drawn to the stories that I don’t understand yet—why, say, is there an uprising in Chile? But when I read the same newspaper online, I usually skim those stories, and click on the simpler, more scannable stories related to the stuff I already know.

if you make people read quickly, they are much less likely to grapple with complex or challenging material. They start to prefer simplistic statements.