 This entry is dedicated to the late Wesley Salmon, who did so much to educate philosophers about the significance of Zeno’s paradoxes. Those familiar with his work will see that this discussion owes a great deal to him; I hope that he would find it satisfactory. This material is based upon work supported by National Science Foundation Grant SES-0004375. I would also like to thank Eliezer Dorr for bringing to my attention some problems with my original formulation of the argument from finite size, an anonymous referee for some thoughtful comments, and Georgette Sinkler for catching errors in earlier versions. I also revised the discussion of complete divisibility in response to Philip Ehrlich’s (2014) enlightening paper.