“According to a study published this week by Giuseppe Plazzi of the University of Bologna’s Sleep Laboratory, Dante may have been narcoleptic: a sufferer from the neurological disorder that, among other symptoms, causes people to drift off suddenly at all times of day.” [. . .] –Sarah Bakewell, “If Dante was a narcoleptic, why should it matter?” The Guardian, September 27, 2013
See also the related discussion from LitHub, posted here.