Philosophical Problems of Space and Time

This monograph constitutes a rigorous philosophical examination of fundamental concepts in the philosophy of physics, with particular attention to how modern scientific theories challenge traditional metaphysical assumptions about space, time, and causality. While not primarily concerned with theological questions, Grünbaum's work bears significantly on debates about divine action and the nature of reality that underpin many arguments for God's existence.

Grünbaum develops a sophisticated analysis of spatiotemporal concepts through careful engagement with both classical and relativistic physics. He argues that many philosophical problems traditionally associated with space and time arise from inadequate attention to the empirical content of physical theories. Against philosophers who maintain that certain features of space and time can be known a priori, Grünbaum contends that our understanding of these concepts must be fundamentally informed by scientific investigation. This position challenges natural theology approaches that rely on supposedly necessary truths about causation, temporal succession, or spatial extension.

The work's most significant contribution to discussions of God lies in its treatment of cosmological issues and the problem of temporal beginnings. Grünbaum examines whether the universe requires a temporal origin and what such an origin might imply for causal explanation. He critiques arguments that move from premises about temporal finitude to conclusions about divine creation, showing how these arguments often rest on questionable assumptions about the nature of time itself. His analysis of different models of spacetime geometry demonstrates that questions about "before" the universe or causes "outside" spacetime may be conceptually malformed.

Methodologically, Grünbaum employs the tools of analytic philosophy while maintaining close engagement with actual physical theories. He examines how relativity theory transforms our understanding of simultaneity, causation, and determinism - concepts frequently invoked in arguments about divine foreknowledge and providence. The work challenges both scientific materialists who claim physics eliminates mystery and theologians who locate God in gaps within physical explanation.

While Grünbaum does not explicitly argue for atheism, his naturalistic approach to fundamental metaphysical questions and his critique of a priori reasoning about space and time undermines several traditional natural theology arguments. The monograph demonstrates how modern physics reconfigures rather than resolves ancient philosophical problems, suggesting that theological interpretations of cosmology must grapple seriously with the conceptual revolutions of twentieth-century science.