Mary Beard’s Medusas
Adapting a lecture into a book is difficult. A good lecture, even one that lasts an hour, should only cycle through a single full idea. The lecturer should introduce some supporting concepts, and present to her audience a range of evidence that sustains the arc of her argument. But a lecture is inherently confined, since nobody’s attention span can visit multiple ideas properly in one sitting. A book, in contrast, should take its reader on a journey with an itinerary.