These badges encourage people to click on articles, not necessarily to learn anything from them. Maybe they will still learn, but maybe it will encourage them t

These badges encourage people to click on articles, not necessarily to learn anything from them. Maybe they will still learn, but maybe it will encourage them to skim (even) more. You can sometimes obtain very unexpected results if you provide an incentive for something which is almost (but not quite) the thing that you want to favor.