The paperback revolution essentially broke this relationship by redefining it through access to knowledge.
In the United States, many companies entered the paperback publishing field in the years after Pocket Books' inception, including Ace, Dell, Bantam, Avon and dozens of other smaller publishers.
This occurred at the same time that the masses were starting to attend university, leading to the student revolts of 1968 prompting open access to knowledge.
The paperback book meant that more people were able to openly and easily access knowledge and this led to people wanting more and more of it.
A paperback, also known as a softcover or softback, is a type of book characterized by a thick paper or paperboard cover, and often held together with glue rather than stitches or staples. S., there are "mass-market paperbacks" and larger, more durable "trade paperbacks". K., there are A-format, B-format, and the largest C-format sizes.
In contrast, hardcover or hardback books are bound with cardboard covered with cloth. Inexpensive books bound in paper have existed since at least the 19th century in such forms as pamphlets, yellowbacks, dime novels, and airport novels. Paperback editions of books are issued when a publisher decides to release a book in a low-cost format.
The first released book on Penguin's 1935 list was André Maurois' Ariel. He purchased paperback rights from publishers, ordered large print runs (such as 20,000 copies—large for the time) to keep unit prices low, and looked to non-traditional book-selling retail locations.
Booksellers were initially reluctant to buy his books, but when Woolworths placed a large order, the books sold extremely well.
The term "pocket book" became synonymous with paperback in English-speaking North America.
In French, the term livre de poche was used and is still in use today.