"Collectif" ("collective," in French) is a generic publisher credit used when a book has no single author — a multi-contributor anthology, magazine issue, or edited compilation. It is not a person; works credited to it in this catalog are unrelated titles from many different publishers and editors sharing this placeholder byline.
Jean d'Ormesson, a French writer, is known for his thoughtful explorations in books such as Que seraient-ils devenus ? and Presque rien sur presque tout. His work often combines philosophical reflection with a distinctive wit.
Jean Dutourd was a French author, perhaps best known for his speculative work, Que seraient-ils devenus ? This book explores alternate historical scenarios with his characteristic wit.