This experiment applies to textbooks as well. I looked over an old edition of Halliday+Resnick once, a well thought of lower division physics book. The text wa

This experiment applies to textbooks as well. I looked over an old edition of Halliday+Resnick once, a well thought of lower division physics book. The text was substantially the same but it was black and white. This meant no syntax highlighting and also no glossy paper. The result was a LOT easier to read. Glossy paper is a designery thing to do for deeper blacks but it's less readable. Indeed that's why actual designers like matte finish MBPs, because you don't want to read with a 20% opacity of yourself staring at you.