A.19.SOURCE-SET-SPACE-SUBSTRATE:5 - Archetypal Grounding
Preface node
heading:a-19-source-set-space-substrate-5-archetypal-grounding:24082
What this page is
This is generated FPF reference text from the specification preface or supporting sections. It helps interpret FPF; it is not FPF Reference product documentation.
Methodology
Use it to understand how the specification wants to be read, then return to a route, pattern, or work packet for active work. Cite generated IDs only when the wording changes the task decision.
Content
A.19.SOURCE-SET-SPACE-SUBSTRATE:5.1 - System
Tell. One QD line keeps saying that one archive is both the search-side role and the evaluation basis. Downstream readers need to see that the same declared CharacteristicSpace can still occupy two different role positions without turning the archive or the descriptor layer into the space itself.
Show.
Cash-out. This line now says three distinct things cleanly: the active source set is one archive, both role-refs resolve to the same declared CharacteristicSpace, and the DescriptorMapRef plus DistanceDefRef are only interpretive layers over that shared space reference. A downstream selection or archive-maintenance discussion can reuse this line without pretending the archive itself is the space.
A.19.SOURCE-SET-SPACE-SUBSTRATE:5.2 - Episteme
Tell. One synthesis line presents one derived tradition front and then starts speaking as if the visible front were the default meaning of the whole palette.
Show.
Cash-out. The visible front stays a derived view over the palette, the base palette stays recoverable, and the outcome-side evaluation line stays explicit. A later interpretive view or atlas view may reorganize this story, but it may not silently change the declared source-to-outcome relation or erase the bridge-loss warning.
A.19.SOURCE-SET-SPACE-SUBSTRATE:5.3 - Boundary anti-case
Tell. One note says only that "the shortlist front is the published result for the current selector result" and names no source-to-outcome relation, no search-side space, no outcome-side space, and no posture.
Show. This is not a substrate declaration. It is publication metadata over one already-selected set.
Cash-out. Apply G.5 or G.10 to that note. Do not pad it with pseudo-substrate words just to make it look deeper than it is.
A.19.SOURCE-SET-SPACE-SUBSTRATE:5.4 - Use-situation spread
Use the pattern this way across different working situations:
Last Updated: 2026-06-08 — upstream FPF commit 093d30e8 (github.com/ailev/FPF)