ABSTRACT
There are two commonly traveled direct paths to causal reductionism. The first tries to show that causal reductionism is true by demonstrating that a distinctive reductive theory of the causal relation is correct. In general relativity, the time-like geodesics of a space-time represent the possible world-lines of massive particles falling freely under the influence of gravity alone. And, similarly, the null geodesics of a space-time represent the possible world-lines of massless particles moving under the influence of gravity alone. Causation enters physics by way of the gravitational field and by way of domains of influence. One might judge that the author's argumentation essentially requires the truth of space-time substantivalism. The reductionist may suggest that all of the causal talk I've referenced can be removed without loss of explanatory power. Explicitly causal interpretations of all of the above are therefore problematic. Minimal fundamental causation is indispensable to the best interpretation of general theory of relativity (GTR).
