What I’ve read on screen seems slippery, though. When I later recall it, the text is slightly translucent in my mind’s eye. It’s as if my brain better absorbs what’s presented on paper. Pixels just don’t seem to stick. And often I’ve found myself wondering, why might that be?

The usual explanation is that internet devices foster distraction, or that my late-thirty-something brain isn’t that of a true digital native, accustomed to screens since infancy. But I have the same feeling when I am reading a screen that’s not connected to the internet and Twitter or online Boggle can’t get in the way. And research finds that kids these days consistently prefer their textbooks in print rather than pixels. Whatever the answer, it’s not just about habit.

Another explanation, expressed in a recent Washington Post article on the decline of deep reading, blames a sweeping change in our lifestyles: We’re all so multitasked and attention-fragmented that our brains are losing the ability to focus on long, linear texts. I certainly feel this way, but if I don’t read deeply as often or easily as I used to, it does still happen. It just doesn’t happen on screen, and not even on devices designed specifically for that experience.

Maybe it’s time to start thinking of paper and screens another way: not as an old technology and its inevitable replacement, but as different and complementary interfaces, each stimulating particular modes of thinking.