 Silberstein, Stuckey, and McDevitt (2018), based on earlier work together with Cifone (Stuckey, Silberstein, &amp; Cifone 2008; Silberstein, Cifone, &amp; Stuckey. 2008), suggest a realist interpretation that they call the “relational blockworld view”. The ontology of this interpretation consists of so-called “spacetimesource elements”, which are characterized as “amalgams of space, time, and sources” (Silberstein, Stuckey, &amp; McDevitt 2018: 153).