Phenomenological spacetime engineering and observations

Determine whether future observations will provide sufficient guidance to identify or falsify phenomenological spacetime constructions (e.g., singularity-excision spacetimes) that model quantum gravity effects at macroscopic scales.

Background

Engineered spacetimes (e.g., regular black holes, throat geometries) provide testbeds for potential macroscopic quantum gravity manifestations. Their observational viability depends on whether data can meaningfully distinguish such constructs.

This open question asks if such modelling can be steered by forthcoming measurements.