 Another suggested strategy to take into account Russell’s worry while continuing to apply causal notions in physics in a consistent manner is to understand interventionism in “perspectival” terms (Price 2007; Price &amp; Corry 2007; Price &amp; Weslake 2010; Ismael 2016). Perspectivalism is usually staged, as seems natural in the setting of modern physics (although more will be said on this below), in the framework of a block universe view where the past, present, and future are equally real. In this framework, causality cannot have anything to do with changing the future or the past because both are—from an “external” perspective—completely “fixed”. But one can understand causation in the block universe from an “internal” perspective, according to which causal correlations are precisely those that are stable under interventions on those variables that we refer to as the “causes”.