I guess you can’t simply blame technology for the reduced length of attention spans. In other news, at some point a bad attention span was as short as ten pages long:
Literary criticism doesn’t exist in Denmark. The recipe for newspaper reviews is: if I have written fifty-three sheets, the review will be one column at most, but if I write a ten-page pamphlet the review will fill a whole issue, maybe two. And naturally this effrontery is much appreciated in a small town, for of course there are at most only two or three authors who suffer because of this; all the others benefit from a big work being treated as a trifle and a pamphlet as something of much importance.
- Søren Kierkegaard, 1847
Søren Kierkegaard, Papers and Journals: A Selection, trans. Alastair Hannay. New York: Penguin Books, 1996.