>[!citation] >Norton, J. D. (2008). The dome: An unexpectedly simple failure of determinism. *Philosophy of Science*, *75*(5), 786–798. https://doi.org/d2cjm9 >[!abstract] >Newton's equations of motion tell us that a mass at rest at the apex of a dome with the shape specified here can spontaneously move. It has been suggested that this indeterminism should be discounted since it draws on an incomplete rendering of Newtonian physics, or it is “unphysical,” or it employs illicit idealizations. I analyze and reject each of these reasons.