Binx is probably reading Doughty’s
Travels in Arabia Deserta, an 1888 narrative of the author’s travels among the Bedouins. Binx used to prefer hefty classics and foundational historical and scientific textbooks—these were a way of making sense of the wider world, a huge task that sometimes required frivolous breaks. But now that Binx is satisfied with his understanding of how the wider world works, he’s left trying to understand his own place within it. In other words, he no longer wants to be an “Anyone”—hence reading more focused books about specific people, for insight into the search.