my reading is that it's a distillation of his + Nate's corpus into 250 pages aimed at political leaders not techies; and that he didn't want to undermine book sales by admitting it won't break any new ground
comment from Nate wrt the book's content... 🤭
though also the book has per-chapter QR codes that link to supplemental content, so it's not *just* 250 pages