 Since he thinks that both the logical principle of bivalence and causal determinism have fatalistic implications, he rejects both bivalence and causal determinism. In order to avoid fatalism, within his materialism and atomism, Epicurus posits an indeterministic atomic motion, the “swerve” (Fat. 22, LS 20E). As the Epicurean poet Lucretius puts it, if atomic motion were caused only by the weight of atoms and their collisions and entanglements, human beings, as well as all other animals, would be subject to necessity and unable to move themselves around as they please. But we obviously can move ourselves around as we please, and so there is another cause of atomic motion, an occasional minute swerve to the side that occurs “at no fixed region of space or fixed time” and liberates us from fate (DRN 2.251–93, LS 20F). Because determinism is false, the future is still open, and statements like “you will recover from an illness” are, at present, neither true nor false.