A Book Shambles EXTRA this week, free and unedited for everyone. Robin chats extensively with sleep expert and neuroscientists Matthew Walker about his new book, Why We Sleep, out this week. They chat about the evolution of sleep, dreams, Jung defecating on cathedrals, alien abductions, the writing of Carl Sagan, Knausgaard and more. Next week will be a 'normal' episode with an extended edition for Patreon supporters like usual. You can become a Patreon for as little as $1 an episode (maximum of three charged episodes a month) at patreon.com/bookshambles