  'Locality' is a fraught word, even within the restricted context of Bell's
theorem. As one of us has argued elsewhere, that is partly because Bell himself
used the word with different meanings at different stages in his career. The
original, weaker, meaning for locality was in his 1964 theorem: that the choice
of setting by one party could never affect the outcome of a measurement
performed by a distant second party. The epitome of a quantum theory violating
this weak notion of locality (and hence exhibiting a strong form of
nonlocality) is Bohmian mechanics. Recently, a new approach to quantum
mechanics, inspired by Bohmian mechanics, has been proposed: Many Interacting
Worlds. While it is conceptually clear how the interaction between worlds can
enable this strong nonlocality, technical problems in the theory have thus far
prevented a proof by simulation. Here we report significant progress in
tackling one of the most basic difficulties that needs to be overcome:
correctly modelling wavefunctions with nodes.
