| Modern multilevel evolutionary theory looks for one common substrate across several levels rather than forcing one tradition-local carrier to tell the whole story. | Vanchurin (2026) on generally covariant evolutionary dynamics; Warrell et al. (2024) on unified multilevel evolutionary frameworks. | SS-0, SS-2, CC-A19SS-1, CC-A19SS-2. | Keeps one neutral substrate beside A.19, so one archive, front, or publication face cannot silently stand in for the whole substrate declaration load. | Adapt. Keep one neutral substrate, but bind it to FPF declaration discipline. |
| Contemporary QD practice distinguishes feature/behavior space, quality/objective side, archive/repertoire set results, and local competition rather than treating one vague “space” as enough. | 2026 QD review; IJCAI 2024 stepping-stone results; MOUR-QD (2025). | SS-1, SS-3, CC-A19SS-3, CC-A19SS-4, worked slices 5.1 and 5.2. | Forces search-side ref, outcome-side ref, and source-to-outcome relation to stay explicit, so downstream search/evaluation claims remain auditable. | Adopt/Adapt. Adopt the split; adapt it to FPF declared-source-set discipline. |
| Frontier QD and adjacent work increasingly use learned, adaptive, unstructured, and uncertainty-bearing spaces and qualifiers, so one heavy metric or transition stack should not be assumed everywhere. | Uncertain Quality-Diversity (2023); Extract-QD (2025); later adaptive-space and meta-competition lines. | SS-4, SS-5, CC-A19SS-5, CC-A19SS-6. | Makes uncertainty posture explicit while keeping declared map ref, metric, transition, and bridge-loss pins optional unless the case truly depends on them. | Adopt/Adapt. Adopt uncertainty honesty and optional heavier qualifiers; reject mandatory geometric monoculture. |
| Atlas and manifold-qualifier lines are useful in some cases, but they are not the default meaning of every source-set/space-substrate line. | UMAP 2024 review; 2024-2025 atlas and manifold-optimization lines. | SS-5, SS-6, boundary anti-case 5.3, CC-A19SS-8. | Preserves substrate semantics so later interpretive or atlas views can help interpretation without quietly becoming the ontology. | Adapt. Keep atlas-form interpretation as a later specialization, not the substrate’s ordinary center. |