The companion paper FBT01A revises the curvature-readout structure of the Fracture–Berry–Tension (FBT) carrier geometry. In the current formulation, the relevant scalar data are no longer organized as a rigid three-κ system. Instead, one distinguishes the global Liouville capacity of the six-dimensional carrier, Kvol =B61/3!Ω∧3B , the normalized reduced dual-phase flux Kphase =1/2πΣ2Ωeffphase, and the local horizontal–vertical mixed legibility density ρmix. The present paper proposes a restricted conjectural physical reading of these quantities, focused only on effective gravitational coupling. The central claim is conjectural rather than derived. The reduced dual-phase flux Kphase is argued to be the most natural candidate for controlling the dimensionless geometric factor ggrav in an effective four-dimensional gravitational coupling. The argument is structural: Kvol measures the total Liouville capacity of the full carrier and is therefore too coarse to isolate the internal phase contribution, whereas ρmix is local and splitting-dependent and is therefore better interpreted as a modulation or dressing factor. By contrast, Kphase is global on the reduced dual-phase sector and thus supplies the most plausible bridge between internal phase geometry and an effective coupling factor. This structural argument is further supported by two upstream layers of the FBT framework. The balanced shell condition of FBT01D dynamically selects the dual-phase flux as the quantity that directly couples to the horizontal tension sector, while the QGT-compatible stiffness mechanism of FBT06A ensures that the local geometry controlling Kphase carries a positive Gaussian stiffness.
ZHAI Xingyun (Mon,) studied this question.