The article discusses the various secrets and behind-the-scenes details that producers of the TV show MASH kept hidden from fans. Some of the things mentioned include the use of real army surgical instruments in the show, the actors' dissatisfaction with certain storylines, and the controversial decision to add a laugh track to the show despite its serious subject matter. Additionally, the article touches on the challenges faced by the cast and crew while filming the show, such as the extreme weather conditions on set and the tensions between actors. Overall, the producers of MASH purposely kept certain aspects of the show hidden from fans in order to maintain the illusion of a smooth production and to preserve the integrity of the show's unique blend of comedy and drama.