A paperback is just a too versatile and easy device to read from.
The screen is the same size as Kindle 1.0 - a legible 6-inch monochrome e-ink display that requires an external light source to view - just like a paperback.
The dense, readable display and paperback size allow readers to sink into an author’s world just as they do with a physical tome.
The novel's allure persists to this day, even if some of Holden's preoccupations now seem a bit dated, and it continues to sell tens of thousands of copies a year in paperback.
It was sort of like Google in paperback form, 35 years before Google came along: it was idealistic, and overflowing with neat tools and great notions.
The readers of 100 years ago are smaller than current reading books, closer in size to our modern paperback books.