James Read (University of Oxford)
The goal of this paper is to pinpoint the precise reasons for the differing status of inertial motion in TPG versus NG. In so doing, I seek to bring greater clarity to the notion of inertial motion in physical theories more generally. Along the way, I discuss Knox's "Newtonian equivalence principle" (Knox, 2014), and the strand of structuralism about physical theories to which I take Knox to be committed.