Rewind - Ye olde Substack: publishing’s hot new business model has 17th-century originsThe ancestors of today’s inbox epistles were the handwritten “letters of news” that circulated in England in the 17th century.#publishing’s#substack#rewind#old·economist.com·Feb 1, 2021Rewind - Ye olde Substack: publishing’s hot new business model has 17th-century origins