A Misadventure of the Synthetic: The Curious Case of Fritz London

This paper examines a largely overlooked episode in the debate over the analytic–synthetic distinction (ASD) by reconstructing Fritz London’s early intellectual development. London’s formative years were shaped by a philosophical dissertation on deductive theory, deeply influenced by Edmund Husserl’s Logische Untersuchungen. The same phenomenological framework informs Die Bedingungen der Möglichkeit einer Maßbestimmung in einer physikalischen Mannigfaltigkeit und das Prinzip der Ähnlichkeit, a text that offers an illuminating case study for the philosophy of physics. In sum, I argue that London upholds a distinctive strategy for loosening the ASD from its traditional setting. I suggest that London moves toward what I call infraconceptuality: a mode of theoretical determination that partially reconciles analytic containment with the post-Kantian conception of thought as a productive faculty. The paper consequently situates London’s project within the broader landscape of post-Kantian and phenomenological reconfigurations of the ASD, showing how his account of deductive theory provides an original interpretation of the growth of knowledge in physics, mathematics, and logic.