The Science of Mechanics

Ernst Mach's "The Science of Mechanics" (1883) presents a revolutionary critique of Newtonian physics that carries profound implications for theological and metaphysical debates about God's role in natural philosophy. While ostensibly a treatise on mechanics, Mach's work systematically dismantles the theological underpinnings of classical physics, particularly the concepts of absolute space and time that Newton explicitly linked to divine attributes.

Mach argues that scientific concepts should derive solely from observable phenomena and their relations, rejecting any appeal to unobservable absolutes. He traces how theological assumptions infiltrated mechanics through Newton's framework, where absolute space functioned as God's sensorium and absolute time reflected divine omnipresence. By demonstrating that mechanical principles can be reformulated without these absolutes, Mach effectively removes a major scientific argument for God's necessary existence in physical theory.

The work employs a historico-critical method, examining how religious presuppositions shaped the development of mechanics from its inception. Mach shows how concepts like force, mass, and inertia evolved from anthropomorphic and theological origins into purely relational descriptions. His critique extends to the notion of causation itself, which he argues often conceals crypto-theological assumptions about divine action in nature.

Against natural theologians who find evidence for God in the mathematical elegance and universality of physical laws, Mach contends that such laws merely describe economical ways of organizing sensory experience. He rejects the view that mechanics reveals a divine blueprint, arguing instead that scientific theories are human constructs designed for prediction and control. This position undermines both deistic arguments from design and theistic claims about divine providence operating through natural laws.

Mach's influence extends beyond physics to philosophy of science generally. His principle of economy (later termed "Mach's Principle") suggests that scientific theories should contain no metaphysical surplus, effectively excluding God as an explanatory hypothesis. While not explicitly atheistic, Mach's approach renders divine action scientifically superfluous and methodologically illegitimate.

The work's significance for God debates lies in its systematic demonstration that successful science requires no theological commitments. By purging physics of its hidden religious assumptions, Mach provides a blueprint for thoroughly naturalistic science that would influence logical positivism and contemporary debates about methodological naturalism. His critique remains relevant whenever scientific findings are marshaled as evidence for or against divine existence.