  A theorem due to Bob Geroch and Pong Soo Jang ["Motion of a Body in General
Relativity." Journal of Mathematical Physics 16(1), (1975)] provides a sense in
which the geodesic principle has the status of a theorem in General Relativity
(GR). I have recently shown that a similar theorem holds in the context of
geometrized Newtonian gravitation (Newton-Cartan theory) [Weatherall, J. O.
"The Motion of a Body in Newtonian Theories." Journal of Mathematical Physics
52(3), (2011)]. Here I compare the interpretations of these two theorems. I
argue that despite some apparent differences between the theorems, the status
of the geodesic principle in geometrized Newtonian gravitation is, mutatis
mutandis, strikingly similar to the relativistic case.
