This work investigates the foundational logical and semantic theories of Gottlob Frege to determine where his philosophical framework fails to account for modern linguistic and logical challenges. Mark Sainsbury, a prominent philosopher known for his work in logic and the philosophy of language, utilizes a rigorous analytical approach to dissect Frege's influence on contemporary thought. He systematically evaluates the limitations of Fregean concepts such as sense and reference, proposing alternative frameworks that address the inconsistencies found in classical logical systems.

Experts in the field of analytic philosophy recognize this text as a sophisticated critique that requires a strong background in formal logic to fully appreciate. Scholars frequently cite the book for its precise argumentation and its contribution to the ongoing debate regarding the limits of classical logical systems.