Operational precision for other assumptions about time and spacetime

Determine whether reasoning analogous to the entanglement-assisted Bell-inequality-like certification of dynamical time-reversal symmetry can make other assumptions about time and spacetime operationally precise.

Background

The central protocol expresses a temporal relation between forward and time-reversed dynamics as an experimentally testable probability constraint by using entangled probes and measurements. The discussion asks whether this strategy can be extended beyond time-reversal symmetry.

The paper leaves unresolved whether analogous constructions can turn other foundational assumptions concerning time and spacetime into quantitatively testable operational statements.