Two roads to retrocausality

In recent years the quantum foundations community has seen increasing interest in possibility of using retrocausality as a route to rejecting conclusions Bell’s theorem and restoring locality physics. On other hand, it also been argued that accepting nonlocality leads form retrocausality. this article we seek elucidate relationship between locality. We begin by providing brief schema various ways which violations inequalities might lead us consider some then possible motivations for rescue locality, arguing none these is sufficient show local retrocausal theories should always be preferred nonlocal theories, therefore there no clear reason focus research efforts entirely on seeking models. Next, examine several different conceptions retrocausality, concluding ‘all-at-once’ more coherent than alternative dynamical picture. argue since approach requires probabilities assigned entire histories, not playing any crucial role within Thus conclude way may right Finally, demonstrate existence insisting nonexistence reference frames naturally acceptance albeit one mediated physical systems travelling backwards time. natural motivate models mechanics.