"Mutmassungen über Jakob" is a novel by the German author Uwe Johnson. The story revolves around the character Jakob, who is a complex figure navigating his life in post-war Germany. The narrative explores themes of identity, memory, and the impact of history on personal lives. The book is structured as a series of reflections and observations, blending fiction with elements of autobiography. It delves into Jakob's relationships and experiences, providing insight into the societal changes of the time. Johnson's writing style is known for its depth and intricacy, making the novel a significant work in contemporary German literature.