Zeno’s paradoxes are a set of philosophical problems generally thought to have been devised by Greek philosopher Zeno of Elea (c. 490–430 BC) to support Parmenides‘ doctrine that contrary to the evidence of one’s senses, the belief in plurality and change is mistaken, and in particular that motion is nothing but an illusion. It is usually assumed, based on Plato’sParmenides (128a–d), that Zeno took on the project of creating these paradoxes because other philosophers had created paradoxes against Parmenides’ view. Thus Plato has Zeno say the purpose of the paradoxes “is to show that their hypothesis that existences are many, if properly followed up, leads to still more absurd results than the hypothesis that they are one.”[1] Plato has Socrates claim that Zeno and Parmenides were essentially arguing exactly the same point.[2] Some of Zeno’s nine surviving paradoxes (preserved in Aristotle’s Physics[3][4] and Simplicius’s commentary thereon) are essentially equivalent to one another. Aristotle offered a refutation of some of them.[3] Three of the strongest and most famous—that of Achilles and the tortoise, the Dichotomy argument, and that of an arrow in flight—are presented in detail below.