Wigner’s Diamond and the Quantum Fragmentation of Space-time

Recent no-go theorems on interpretations of quantum theory featuring an assumption of ‘Absoluteness of Observed Events’ (AOE) are shown to have an unexpectedly strong corollary: one cannot reject AOE and at the same time assume that the ‘observed events’ in question can all be (i) single-valued and (ii) embedded within a single background space-time common to all observers. Consequently, interpretations that reject AOE appear incompatible with a ‘block universe’ view of space-time.