Technology seems to discourage slow, immersive reading. Reading on a screen tires your eyes and makes it harder for you to keep your place. Online writing tends to be more skimmable and list-like than print. The cognitive neuroscientist Mary Walt argued recently that this "new norm" of skim reading is producing "an invisible, game -changing transformation" in how readers process words. The neuronal circuit that sustains the brain's capacity to read now favors the rapid absorption of information.

We shouldn't overplay this danger. All readers skim. From about the age of nine, our eyes start to bounce around the page, reading only about a quarter of the words properly, and filling in the gaps by inference. Nor is there anything new in these fears about declining attention spans. So far, the anxieties have proved to be false alarms. "Quite a few critics have been worried about attention spans lately and see very short stories as signs of cultural decline," the American author Selvin Brown wrote. "No one ever said that poems were evidence of short attention spans."

And yet the Internet has certainly changed the way we read. For a start, it means that there is more to read, because more people than ever are writing. And digital writing is meant for rapid release and response. This mode of writing and reading can be interactive and fun. But often it treats other people's words as something to be quickly harvested as fodder (素材) to say something else. Everyone talks over the top of everyone else, desperate to be heard.

Perhaps we should slow down. Reading is constantly promoted as a social good and source of personal achievement. But this advocacy often emphasizes "enthusiastic" "passionate" or "eager" reading, none of which adjectives suggest slow, quiet absorption. To a slow reader, a piece of writing can only be fully understood by immersing oneself in the words and their slow comprehension of a line of thought.

The human need for this kind of deep reading is tootenaciousfor any new technology to destroy. We often assume that technological change can't be stopped and happens in one direction, so that older media like "dead-tree" books are kicked out by newer, more virtual forms. In practice, older technologies can coexist with new ones. The Kindle has not killed off the printed book any more than the car killed off the bicycle. We still want to enjoy slowly. formed ideas and carefully-chosen words. Even in a fast-moving age, there is time for slow reading.