Guides to his new novel, such as Greg Taylor's "Inside Dan Brown's Inferno, " are already for sale on Amazon. (Mr. Taylor predicted that Mr. Brown would emphasize Dante's interest in the sacred feminine, but that theme never emerges in the book).
Possible candidates include his close advisers Glenn Hubbard and Greg Mankiw, and John Taylor, a Stanford University economist who has fiercely criticised both monetary and fiscal stimulus.