The construction uses a fundamental electromagnetic realization parameter derived within MQ. This replaces an older auxiliary route that used a measured electromagnetic quantity more directly. The change concerns the organization of the derivation; it is not a claim that all empirical information has disappeared from the calculation.

The upstream source set includes the fine-structure constant, electron mass, and Bohr radius, together with the defined speed of light. Outputs built from that shared foundation inherit its dependencies. A calculation cannot be independently validated by the same fine-structure information used to determine a controlling coefficient.

The research aim is to explain relationships among quantities such as charge, vacuum permittivity, vacuum permeability, and Coulomb coupling through a common measurement account. Demonstrating that the expressions close consistently is a substantive mathematical requirement. It differs from performing separate laboratory determinations of every member of the family.

Precision language therefore requires care. Reporters should distinguish the number of digits displayed in a model calculation from the independently supported precision of its inputs and outputs. Shared uncertainties and correlations matter when comparing close numerical values.

This development makes the constants program more transparent for outside scrutiny. The strongest next test would identify a consequence that is not already fixed by the calibration information and specify its expected uncertainty before comparing it with new evidence. Until then, the appropriate classification for much of the family is input-dependent derivation or internal closure.